-50.96% is the change from 622 to 305
Calculation steps:
[( 305 - 622 ) ÷ 622] x 100 = -50.96%
Formula
Percentage change = [(305 - 622) / 622] x 100
Subtract the new number by the original number
305 - 622 = -317
-317 ÷ 622 = -0.5096463022508039
-0.5096463022508039 x 100 = -50.96%