-91.22% is the change from 820 to 72
Calculation steps:
[( 72 - 820 ) ÷ 820] x 100 = -91.22%
Formula
Percentage change = [(72 - 820) / 820] x 100
Subtract the new number by the original number
72 - 820 = -748
-748 ÷ 820 = -0.9121951219512195
-0.9121951219512195 x 100 = -91.22%