-98.57% is the change from 629 to 9
Calculation steps:
[( 9 - 629 ) ÷ 629] x 100 = -98.57%
Formula
Percentage change = [(9 - 629) / 629] x 100
Subtract the new number by the original number
9 - 629 = -620
-620 ÷ 629 = -0.985691573926868
-0.985691573926868 x 100 = -98.57%