How to compute trade P&L as a percentage

1. Enter entry price

   "Entry price" is the price you opened the trade at. The tool does no commission, slippage, or carry modelling — net the entry by hand if you want fees baked in.

2. Enter exit price

   "Exit price" is where you closed (or are quoting an exit). Same currency / quote as entry. Entry = 0 throws "Entry cannot be 0." — percentage isn't defined.

3. Press Run

   Result is pnlPercent = ((exit − entry) / entry) × 100, rounded to 4 decimals. Positive = profit, negative = loss. The sign assumes a long position; for shorts, flip the sign yourself.

4. Position size lives elsewhere

   This tool returns ONLY the percentage. To know the dollar P&L, multiply by position size; to check whether the percentage is acceptable given your stop, use risk-reward-calculator.