Percentage Change Calculator
Calculate the percentage change between two values, whether increase or decrease. Essential for financial analysis, statistics, and data comparison.
Percentage Change Formula
| Formula | Result | ||
|---|---|---|---|
| ((New - Old) / | Old | ) × 100 | Positive = increase, Negative = decrease |
Percentage Change Examples
| From | To | % Change |
|---|---|---|
| 100 | 150 | +50% |
| 100 | 75 | -25% |
| 50 | 100 | +100% |
| 200 | 50 | -75% |
Implementation
``javascript
function percentageChange(original, newValue) {
if (original === 0) return newValue === 0 ? 0 : (newValue > 0 ? Infinity : -Infinity);
return ((newValue - original) / Math.abs(original)) * 100;
}
``
Year-over-Year Change
YoY percentage change compares values from the same period in different years, eliminating seasonal variations and showing true growth trends.