-89.32% is the change from 852 to 91
Calculation steps:
[( 91 - 852 ) ÷ 852] x 100 = -89.32%
Formula
Percentage change = [(91 - 852) / 852] x 100
Subtract the new number by the original number
91 - 852 = -761
-761 ÷ 852 = -0.8931924882629108
-0.8931924882629108 x 100 = -89.32%