Calculator
Percentage Increase Calculator
Find the percentage change between two values, or calculate a new value after a percent increase or decrease.
Mode A
Find % change
From value A to value B
% Change
—
Formula: ((B − A) ÷ |A|) × 100
Mode B
Find new value
After a % increase or decrease
%
Use negative for decrease (e.g. −15)
New value
—
Formula: A × (1 + P ÷ 100)
How it works
The percentage change formulas.
Finding % change
((100 − 80) ÷ 80) × 100 = +25% Subtract the original from the new value, divide by the absolute original, and multiply by 100. A positive result means increase; negative means decrease.
Finding new value
200 × (1 + (−15 ÷ 100)) = 170 Multiply the original by 1 plus the percentage as a decimal. For a decrease, use a negative percentage. 200 with −15% = 200 × 0.85 = 170.
Quick reference
| Original | Change | New Value | % Change |
|---|---|---|---|
| 100 | +10% | 110 | +10% |
| 100 | +25% | 125 | +25% |
| 100 | +50% | 150 | +50% |
| 100 | +100% | 200 | +100% |
| 100 | −10% | 90 | −10% |
| 100 | −25% | 75 | −25% |
| 200 | +15% | 230 | +15% |
| 80 | → 100 | 100 | +25% |
Related calculators