Percentage Decrease Calculator
Find the percentage decrease between two numbers.
How to calculate percentage decrease
Decrease % = ((Original Value − New Value) ÷ Original Value) × 100
Example: Price drops from $120 to $90. Decrease = ((120 − 90) ÷ 120) × 100 = 25%
Enter the original (higher) value in "From" and the new (lower) value in "To". The calculator returns a negative number — the percentage decrease is the absolute value of that result.
Common percentage decrease examples
| Original | New price | Decrease |
|---|---|---|
| $100 | $80 | 20% |
| $120 | $90 | 25% |
| $200 | $150 | 25% |
| 1,000 | 750 | 25% |
| $500 | $350 | 30% |
Frequently asked questions
((Original − New) ÷ Original) × 100. For example, from 100 to 75: ((100 − 75) ÷ 100) × 100 = 25% decrease.
They are the same thing. A 50% decrease reduces a number by half. From 200 to 100 is a 50% decrease.