-84.08% is the change from 622 to 99
Calculation steps:
[( 99 - 622 ) ÷ 622] x 100 = -84.08%
Formula
Percentage change = [(99 - 622) / 622] x 100
Subtract the new number by the original number
99 - 622 = -523
-523 ÷ 622 = -0.8408360128617364
-0.8408360128617364 x 100 = -84.08%