-89.78% is the change from 832 to 85
Calculation steps:
[( 85 - 832 ) ÷ 832] x 100 = -89.78%
Formula
Percentage change = [(85 - 832) / 832] x 100
Subtract the new number by the original number
85 - 832 = -747
-747 ÷ 832 = -0.8978365384615384
-0.8978365384615384 x 100 = -89.78%