What it means
Sequential growth compares a measure with the immediately preceding comparable period: quarter-on-quarter revenue growth compares Q2 with Q1, and month-on-month subscribers compares June with May. It shows short-term movement, not necessarily a durable trend, so the period length, measure and whether figures are adjusted or revised should be reported.
The basic percentage calculation is current minus previous, divided by previous, multiplied by 100. If Q2 revenue is $2.1 million and Q1 is $2 million, the increase is $100,000 divided by $2 million, or 5%.
This works when the previous value is positive and meaningful, since a zero base makes a percentage undefined and a negative base can make interpretation awkward, in which case the absolute movement should be shown instead. Year-over-year growth compares the same period one year earlier, so Q2 this year is compared with Q2 last year rather than Q1 this year.
That often reduces seasonal distortion, but it does not automatically remove every seasonal effect, because holidays can move dates, product mix can change and one-off events can affect the prior-year base. Use both views with context.
Investopedia explains sequential growth as comparison with the period immediately before it, and the IMF's quarterly national accounts guidance discusses seasonality and the care needed when interpreting quarter-to-quarter data, though those sources address general principles, not an assurance that a particular company's monthly chart is seasonally adjusted, so a business should disclose its method. Retail offers an obvious example, as holiday-quarter sales may rise sharply and then fall in the following quarter even when the business is healthy, so an unadjusted negative Q1 sequential rate can be a normal pattern.
Compare with several prior years, store count and working days, since a single dip is not enough to diagnose a loss of customer demand. A software business with recurring subscriptions may see less seasonality, but an annual contract invoiced in one month is not the same as monthly recurring revenue, so the numerator and denominator should be defined consistently and new customers, churn and price changes separated when explaining a sequential change.
Sequential growth can identify momentum earlier than a year-over-year rate: suppose current revenue is still far above last year but each of the last three quarters grew less than the preceding one, which may signal slowing expansion. It might also reflect a larger base or a deliberate move from unprofitable sales to better-margin customers, so contribution and retention should be examined before reacting.
The reporting calendar matters too, as a four-week month and a five-week month are not directly comparable without adjustment, and a company that changes its fiscal calendar should explain the difference rather than silently compare periods of unequal length. Revisions to past figures change the rate: if the previous quarter's revenue is restated from $2 million to $1.9 million, the current $2.1 million result implies roughly 10.5%, not 5%, and a chart that mixes old and revised values can manufacture an apparent acceleration.
Managers should compare sequential growth with operating evidence such as orders, pipeline, capacity, customer complaints and inventory, because a surge caused by advance buying can reverse next quarter and a decline from a supply shortage differs from one caused by weak demand. Sequential growth is a quick lens on recent change, whose strength is timeliness and whose weakness is sensitivity to timing, seasonality and one-offs, so a consistent formula, stated adjustments and inspection of the underlying drivers help owners notice a change early without confusing a normal seasonal swing with a permanent turn.
In practice
Real-world examples.
Example
Revenue rises 5% from Q1 to Q2. A company with Q1 revenue of $2,000,000 and Q2 revenue of $2,100,000 reports the 5% sequential rise. It then compares Q2 with the same quarter a year earlier to see whether the rise is partly seasonal.
Example
Monthly subscribers grow 3% month on month. A newsletter business with 20,000 subscribers in May and 20,600 in June reports 3% sequential growth. Before celebrating, it checks whether a one-off promotion in June brought in people who will leave in July.
Example
A seasonal drop makes Q1 sequential growth negative. A toy retailer's sales fall from $3,000,000 in the holiday quarter to $1,500,000 in the next, a sequential fall of 50%. Against the same quarter a year earlier, which was $1,400,000, sales are up 7.1%, so the decline is largely the calendar rather than lost customers.
Formula
Calculation
Sequential growth = (Current period minus Previous period) / Previous period x 100
Worked example. Q2 revenue is $2,100,000 and Q1 revenue is $2,000,000.
- Sequential growth = (2,100,000 - 2,000,000) / 2,000,000 x 100 = 5%.
- If Q1 is later restated to $1,900,000, the same Q2 gives (2,100,000 - 1,900,000) / 1,900,000 x 100 = 10.5%, so the basis must be stated.
- If Q2 revenue a year earlier was $1,800,000, year-over-year growth is (2,100,000 - 1,800,000) / 1,800,000 x 100 = 16.7%, a different and equally valid measure.Case study
Seen in the real world.
This illustrative and entirely fictional case follows Crescent Apps, an invented software company with strong year-over-year sales but slower growth in several consecutive quarters. Management checks churn, pricing and invoicing patterns before changing its sales plan. A rebound in the next quarter is possible but not assumed.
In the invented analysis, the team finds that two large annual contracts were invoiced in the same quarter a year earlier, which flattered the earlier base. After separating new customers, churn and price changes, it sees that underlying growth is steadier than the headline suggests. The story is illustrative, and it shows why a sequential rate is read together with the year-over-year rate and the drivers behind both.
Watch out
Common mistakes.
- Reading a post-holiday sequential fall as proof of lasting demand decline.
- Comparing periods of different lengths without disclosure.
- Claiming a percentage when the previous-period base is zero or misleading.
Questions
People also ask.
What is sequential growth?
The change between adjacent comparable periods.
How is it different from year-over-year?
Year-over-year compares with the same period a year earlier.
What distorts it?
Seasonality, calendar differences, one-offs and revisions can distort it.
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