Percentage Difference Calculator
Find the percentage difference between two numbers when neither is the 'correct' reference point. Useful for comparing two experiments, two prices, two measurements, or any two values on equal footing.
Complete User Guide
Enter the two values (V1 and V2). The calculator finds the absolute difference, divides by the average of the two values, and multiplies by 100. The result is always positive and treats both values symmetrically.
The Mathematical Formula
(|V1 - V2| / ((V1 + V2)/2)) × 100
Percentage Difference = (|V1 − V2| / ((V1 + V2) / 2)) × 100. Using the average as the denominator means neither value is privileged as the 'base', making it a symmetric measure of difference.
Frequently Asked Questions
Related Tools
Calculate
Verified Precise
Secure 100% Free Precise