-97.91% is the change from 622 to 13
Calculation steps:
[( 13 - 622 ) ÷ 622] x 100 = -97.91%
Formula
Percentage change = [(13 - 622) / 622] x 100
Subtract the new number by the original number
13 - 622 = -609
-609 ÷ 622 = -0.9790996784565916
-0.9790996784565916 x 100 = -97.91%