Revenue Growth Calculator

Background.

A sales figure means little on its own. One million dollars is a triumph for a shop that took in $800,000 last year and a crisis for one that took in $1.5 million. Growth puts the number in context by asking how far it moved from where it was, measured as a share of the starting point.

That choice of denominator is what gives the percentage its quirks. Because the change is divided by the earlier figure, a small base flatters: a side business that goes from $50,000 to $1 million has grown 1,900%, which says more about how small it was than how well it did. The same arithmetic makes rises and falls asymmetric. Revenue that drops 20% needs to climb 25% just to get back to where it was, and a 20% fall followed by a 20% rise leaves you 4% short.

The periods must genuinely match. For a seasonal business, comparing December with November tells you about Christmas rather than about the business; comparing this December with last December, or this year with last year, removes the season. Both figures also need the same definition of revenue — gross or net of returns and discounts, with or without sales tax — or the growth rate measures a change in bookkeeping.

What the percentage cannot tell you is where the growth came from. Revenue from a business bought during the year, a weaker home currency that inflates overseas sales on translation, or price rises that merely track inflation all show up as growth here. So does growth bought with steep discounts that never reach profit. Separating organic growth from those effects needs figures this page does not ask for.

What is revenue growth calculator?

Revenue growth is the change in a business's sales from one period to the next, expressed as a percentage of the earlier period's sales. It is a simple period-over-period rate, not an annualised or compound one: a quarter-on-quarter figure stays a quarterly rate, and a change measured across several years is reported as a single total. The prior-period revenue must be above zero, since growth from nothing has no defined percentage.

How to use this calculator.

1. 01Enter prior-period revenue — last year's or last quarter's sales, or the same quarter a year earlier if the business is seasonal.
2. 02Enter current-period revenue for a period of the same length, taken from the same line of the accounts so that returns, discounts and sales tax are treated the same way in both.
3. 03Read the growth rate together with the dollar change beneath it; a high percentage on a small base and a modest percentage on a large one can represent very different amounts of money.
4. 04If a business was acquired or sold during the period, rerun the comparison with its revenue removed from both figures to see the growth of the business you started with.

The formula.

Growth (%) = (R₁ − R₀) ÷ R₀ × 100, where R₀ is revenue in the earlier period and R₁ is revenue in the later one. The numerator, R₁ − R₀, is also reported on its own as the absolute change in dollars. A negative result means revenue fell. The earlier figure sits in the denominator, so it controls how large any given change looks: a $200,000 increase is 25% growth on $800,000 but only 10% on $2 million. No inflation, currency or acquisition adjustment is made, and the rate is not converted to a yearly figure — five per cent a quarter compounds to about 21.6% over a year, not 20%.

A worked example.

Frequently asked questions.

References& sources.

1. [1]OpenStax, Rice University. Principles of Finance, 2022. Chapters 6–10. Retrieved 2026-08-06.
2. [2]U.S. Internal Revenue Service. Tax guidance current 2026. Official forms, instructions and tax topics. Retrieved 2026-08-06.
3. [3]U.S. Securities and Exchange Commission. Investor.gov current 2026. Investment products and risk. Retrieved 2026-08-06.