Percentage Change Calculator
Calculate the percentage change between two prices, or find a target price from a percentage move. Perfect for tracking drawdowns, profit targets, and price movements.
How This Tool Works
This calculator works in two modes: calculate the % change between two prices, or find a target price from a starting price and a % move.
% Change = (New Price − Old Price) ÷ Old Price × 100
Target Price = Starting Price × (1 + Target % ÷ 100)
Note the asymmetry: a 25% gain is not cancelled by a 25% loss. A 25% gain from $80,000 = $100,000, but a 25% loss from $100,000 = $75,000 — not back to $80,000. This asymmetry is why loss prevention matters more than chasing gains.
Learn the Concepts
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