-98.72% is the change from 624 to 8
Calculation steps:
[( 8 - 624 ) ÷ 624] x 100 = -98.72%
Formula
Percentage change = [(8 - 624) / 624] x 100
Subtract the new number by the original number
8 - 624 = -616
-616 ÷ 624 = -0.9871794871794872
-0.9871794871794872 x 100 = -98.72%