-98.78% is the change from 656 to 8
Calculation steps:
[( 8 - 656 ) ÷ 656] x 100 = -98.78%
Formula
Percentage change = [(8 - 656) / 656] x 100
Subtract the new number by the original number
8 - 656 = -648
-648 ÷ 656 = -0.9878048780487805
-0.9878048780487805 x 100 = -98.78%