-89.49% is the change from 818 to 86
Calculation steps:
[( 86 - 818 ) ÷ 818] x 100 = -89.49%
Formula
Percentage change = [(86 - 818) / 818] x 100
Subtract the new number by the original number
86 - 818 = -732
-732 ÷ 818 = -0.8948655256723717
-0.8948655256723717 x 100 = -89.49%