-88.92% is the change from 812 to 90
Calculation steps:
[( 90 - 812 ) ÷ 812] x 100 = -88.92%
Formula
Percentage change = [(90 - 812) / 812] x 100
Subtract the new number by the original number
90 - 812 = -722
-722 ÷ 812 = -0.8891625615763546
-0.8891625615763546 x 100 = -88.92%