Percentage Gain & Loss Calculator
Enter a starting value and an ending value to see the percentage change, the multiple, and how much of a gain would be needed to return to the start.
Enter both values to see the result. Nothing you type leaves your browser.
Reading the result
Percentage change tells you the size of a move relative to where it started. The multiple is often easier to reason about for large moves: a 900% gain and a 10× are the same thing. The recovery figure matters most after a loss, because the deeper the drawdown, the larger the rebound required.
| Loss | Gain needed to break even |
|---|---|
| −10% | +11.1% |
| −25% | +33.3% |
| −50% | +100% |
| −75% | +300% |
| −90% | +900% |
Educational tool only — not financial advice. Results exclude fees and taxes.
Frequently Asked Questions
How do you calculate percentage gain or loss?
Subtract the starting value from the ending value, divide by the starting value, then multiply by 100. A move from 20 to 25 is (25 − 20) ÷ 20 × 100 = 25%.
Why does a 50% loss need a 100% gain to recover?
Percentages are measured against a moving base. Falling 50% from 100 leaves 50; getting back to 100 from 50 requires doubling, which is a 100% gain. Larger drawdowns need disproportionately larger recoveries.
Does this include fees or taxes?
No. It is a pure percentage change between two values. Trading fees, spreads, network fees and any tax owed will reduce your real result.
Also useful: average buy price calculator and break-even calculator.