-98.72% is the change from 625 to 8
Calculation steps:
[( 8 - 625 ) ÷ 625] x 100 = -98.72%
Formula
Percentage change = [(8 - 625) / 625] x 100
Subtract the new number by the original number
8 - 625 = -617
-617 ÷ 625 = -0.9872
-0.9872 x 100 = -98.72%
Example