Percentage Change Calculator (Advanced) — Formula
## Percentage Change vs Percentage Difference
### Percentage Change
**% Change = ((New - Original) / |Original|) × 100**
Used when there is a clear "before" and "after" value.
### Percentage Difference
**% Difference = |New - Original| / ((|Old| + |New|) / 2) × 100**
Used when comparing two values without a clear reference (e.g., comparing two measurements).
### Percentage Change
**% Change = ((New - Original) / |Original|) × 100**
Used when there is a clear "before" and "after" value.
### Percentage Difference
**% Difference = |New - Original| / ((|Old| + |New|) / 2) × 100**
Used when comparing two values without a clear reference (e.g., comparing two measurements).
Esempio Risolto
A value changed from 80 to 92.
- % Change = (92 - 80)/80 × 100 = 12/80 × 100 = 15%
- % Difference = 12/86 × 100 ≈ 13.95%
- Absolute change = 12
- Ratio = 92/80 = 1.15