-87.55% is the change from 683 to 85
Calculation steps:
[( 85 - 683 ) ÷ 683] x 100 = -87.55%
Formula
Percentage change = [(85 - 683) / 683] x 100
Subtract the new number by the original number
85 - 683 = -598
-598 ÷ 683 = -0.8755490483162518
-0.8755490483162518 x 100 = -87.55%