Percentage Change & CAGR Calculator
Month-over-month change, or the compound growth rate behind a multi-year trend.
- Free
- Runs in your browser
- No sign-up
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Enter a starting and an ending value.
Runs entirely in your browser. Nothing is uploaded.
How it works
Percentage change vs percentage points
Going from a 10% to a 12% conversion rate is a 2 percentage-point rise but a 20% relative increase. Mixing the two is the most common way a metric gets misreported. This tool computes the relative change; add or subtract the rates yourself for points.
Why CAGR, not the total
Revenue that tripled over four years grew 200% in total, but only about 32% per year compounded, not 50%. CAGR smooths a multi-period change into one comparable annual rate, which is the honest way to describe a trend and to compare two of different lengths.
CAGR hides the bumps
One caveat worth stating: CAGR assumes smooth compounding, so a line that crashed and recovered shows the same CAGR as one that grew steadily. It answers “what constant rate gets from start to end?”, not “how volatile was the ride?”
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