How do you calculate percentage difference?
Percentage difference compares two values without treating either value as the original or reference value.
Formula: |A − B| ÷ ((|A| + |B|) ÷ 2) × 100.
Example: for 80 and 100, the absolute difference is 20 and the average is 90. The percentage difference is 20 ÷ 90 × 100 = 22.22%.
Use Percentage Calculator when one value is the original baseline and you need percentage change instead.
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