-88.7% is the change from 823 to 93
Calculation steps:
[( 93 - 823 ) ÷ 823] x 100 = -88.7%
Formula
Percentage change = [(93 - 823) / 823] x 100
Subtract the new number by the original number
93 - 823 = -730
-730 ÷ 823 = -0.8869987849331713
-0.8869987849331713 x 100 = -88.7%