-88.94% is the change from 823 to 91
Calculation steps:
[( 91 - 823 ) ÷ 823] x 100 = -88.94%
Formula
Percentage change = [(91 - 823) / 823] x 100
Subtract the new number by the original number
91 - 823 = -732
-732 ÷ 823 = -0.8894289185905225
-0.8894289185905225 x 100 = -88.94%