Percentage Change Calculator (Advanced)
Calculate percentage change, percentage difference, and percentage error between two values.
Pct Change
15.00 %
Fórmula
## 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).
Ejemplo Resuelto
A value changed from 80 to 92.
- 01% Change = (92 - 80)/80 × 100 = 12/80 × 100 = 15%
- 02% Difference = 12/86 × 100 ≈ 13.95%
- 03Absolute change = 12
- 04Ratio = 92/80 = 1.15
Preguntas Frecuentes
What is the difference between percentage change and percentage difference?
Percentage change uses the original value as the denominator (directional). Percentage difference uses the average of both values (symmetric, no direction).
Can percentage change be negative?
Yes, a negative percentage change indicates a decrease. For example, going from 100 to 80 is a -20% change.
What is percentage error?
Percentage error = |experimental - theoretical| / |theoretical| × 100. It measures the accuracy of a measurement against a known standard.
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