-86.4% is the change from 625 to 85
Calculation steps:
[( 85 - 625 ) ÷ 625] x 100 = -86.4%
Formula
Percentage change = [(85 - 625) / 625] x 100
Subtract the new number by the original number
85 - 625 = -540
-540 ÷ 625 = -0.864
-0.864 x 100 = -86.4%
Example