-87.3% is the change from 622 to 79
Calculation steps:
[( 79 - 622 ) ÷ 622] x 100 = -87.3%
Formula
Percentage change = [(79 - 622) / 622] x 100
Subtract the new number by the original number
79 - 622 = -543
-543 ÷ 622 = -0.8729903536977492
-0.8729903536977492 x 100 = -87.3%