Percentage Difference Between Two Numbers
|A − B| / ((|A| + |B|) / 2) × 100. Equal values: 0%. Both zero: 0% by the identical-zero convention. One value zero: 200%. Opposite signs of equal magnitude: 200%. This is not labeled as an increase or decrease.
Percentage difference
Absolute difference
Average magnitude
Formula
Calculation
Related: percentage change · change vs difference