-87.41% is the change from 675 to 85
Calculation steps:
[( 85 - 675 ) ÷ 675] x 100 = -87.41%
Formula
Percentage change = [(85 - 675) / 675] x 100
Subtract the new number by the original number
85 - 675 = -590
-590 ÷ 675 = -0.8740740740740741
-0.8740740740740741 x 100 = -87.41%