Percentage Change Calculator. Free Online
Free percentage change calculator. Instant results in your browser, e.g. From 80 to 95: 18.75% increase (+15). No signup.
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How it works
Enter the original and new values. The calculator shows signed percent change relative to the baseline. This page focuses on percent change between two values only. Everything runs in your browser.
About Percentage Change Calculator. Free Online
Informational only, not professional advice. Report an error.
Percent change compares a new value to an original baseline: ((new - old) / |old|) x 100. Direction (increase or decrease) is included.
Example: From 80 to 95: 18.75% increase (+15). Ideal for before-and-after metrics, price moves, and score improvements.
This page focuses on percent change between two values only. Everything runs in your browser.
Quick tips
- Percent change is asymmetric: going from 80 to 100 is +25%, but 100 to 80 is −20%.
- Always report direction (increase versus decrease) when sharing results.
- Ideal for before-and-after metrics, price moves, and score improvements.
Formulas
((new − old) / |old|) × 100
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Open the full percentage calculator for every mode in one place.
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