Percentage Difference Calculator
Find the percentage difference between two values relative to their average — the symmetric comparison used in science and engineering.
Percentage difference
18.18
Breakdown
- Absolute difference
- 2
Last updated:
FAQ
How is percentage difference different from percentage change?
Percentage change uses one value as the reference (initial). Percentage difference is symmetric — it divides by the average of both values — so the order of the two numbers does not matter.
What is the formula?
(|V1 − V2| ÷ ((V1 + V2) / 2)) × 100.
When should I use percentage difference instead of percentage change?
Use percentage difference when neither value is the original — like comparing two lab results or two competitor prices on equal footing.
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