One multiplication is enough
A percentage move only cares about the change, not the absolute price: multiply your capital by the change to get the P&L, and by (1 + change) to get the resulting value.
If you also know the current price, you get the resulting price for free: new price = current price × (1 + change).
Formulas
capital × changecapital × (1 + change)current price × (1 + change)profit ÷ capital × 100%Worked example (recompute it yourself)
Capital 2,000 USDT, current price 50,000 USDT, a 15% rise:
Profit = 2,000 × 0.15 = 300 USDT; value = 2,000 × 1.15 = 2,300 USDT; new price = 50,000 × 1.15 = 57,500 USDT.
A 15% fall flips the sign: a 300 USDT loss, value down to 1,700 USDT and price down to 42,500 USDT.
Moves compared
| Change | Price after | Position value | P&L |
|---|---|---|---|
| +100% | 100,000 USDT | 4,000 USDT | +2,000 USDT |
| +50% | 75,000 USDT | 3,000 USDT | +1,000 USDT |
| +15% | 57,500 USDT | 2,300 USDT | +300 USDT |
| 0% | 50,000 USDT | 2,000 USDT | 0 USDT |
| −15% | 42,500 USDT | 1,700 USDT | −300 USDT |
| −50% | 25,000 USDT | 1,000 USDT | −1,000 USDT |
Capital 2,000 USDT, current price 50,000 USDT, fees excluded.
Notes
Equal moves produce equal P&L, so this side of the calculation is symmetric. A fall and the recovery that follows are not — see the recovery-gain guide.
Fees are excluded. At 0.1% on both sides, 2,000 USDT bought at 50,000 and sold at 57,500 gives a net profit of about 295.40 USDT, a return of about +14.77% rather than 15%.
This page is arithmetic only. It contains no price forecast.
FAQ
Can I do this without a buy price?
Yes. The percentage method needs only your capital and the change. A buy price is needed only to convert to a specific price or to net out fees.
Why is the return below 15% once fees are included?
Because the buy fee reduces the coins you receive and the sell fee reduces the cash you get. In the example the price rose 15% while the net return was 14.77%.
Why does this differ from the profit calculator?
The price-change tool excludes fees by default, while the profit calculator charges your fee rate on both the buy and the sell. Different conventions.