Percentage Increase and Decrease Calculator (with Steps) | PanMaths

Instantly calculate the percentage difference between two values or apply a percentage change to any number.

⚡ Popular Change Presets:

Initial Value (From)

Final Value (To)

📄 Free Printable Practice

Generate unlimited printable PDF worksheets for Percent Change, Markups, Discounts, and Growth with answer keys.

Percentage Change = ((New Value - Original Value) / Original Value) × 100

Examples

((50 - 40) / 40) × 100 = 25% Increase. =

((90 - 120) / 120) × 100 = -25% (or 25% Decrease). =

Subtract the original value from the new value, divide by the original value, and multiply by 100.

No, if a value decreases by 100%, it becomes zero. It cannot decrease by more than its total value in standard arithmetic.