Percentage Decrease Calculator
Calculate the percentage decrease from one value to another. Useful for discounts, depreciation, weight loss, and measuring reductions.
Percentage Decrease Formula
| Formula | Description |
|---|---|
| ((Old - New) / Old) × 100 | Standard percentage decrease |
| (1 - New / Old) × 100 | Alternative formula |
Percentage Decrease Examples
| Original | New Value | % Decrease |
|---|---|---|
| $100 | $80 | 20% |
| 200 | 150 | 25% |
| 500 | 250 | 50% |
| 1,000 | 100 | 90% |
Implementation
``javascript
function percentageDecrease(original, newValue) {
if (original === 0) return 0;
return ((original - newValue) / original) * 100;
}
``
Common Applications
Percentage decrease is used for discounts, depreciation calculations, weight loss tracking, expense reduction, and decline measurements.