-89.91% is the change from 852 to 86
Calculation steps:
[( 86 - 852 ) ÷ 852] x 100 = -89.91%
Formula
Percentage change = [(86 - 852) / 852] x 100
Subtract the new number by the original number
86 - 852 = -766
-766 ÷ 852 = -0.8990610328638498
-0.8990610328638498 x 100 = -89.91%