This calculator works with any currency pair. For example, you could use GBP (£) as base currency and USD ($) as foreign currency. The result shows profit/loss in your chosen base currency.
Enter an initial value and a percentage. The calculator will show the value change (gain or loss) and the final value after applying the percentage. For example, if Initial Value is 100 and Percentage is 30, the gain is 30, and the Final Value is 130. If Percentage is -10, the loss is 10, and the Final Value is 90.