-88.78% is the change from 820 to 92
Calculation steps:
[( 92 - 820 ) ÷ 820] x 100 = -88.78%
Formula
Percentage change = [(92 - 820) / 820] x 100
Subtract the new number by the original number
92 - 820 = -728
-728 ÷ 820 = -0.8878048780487805
-0.8878048780487805 x 100 = -88.78%