-98.87% is the change from 622 to 7
Calculation steps:
[( 7 - 622 ) ÷ 622] x 100 = -98.87%
Formula
Percentage change = [(7 - 622) / 622] x 100
Subtract the new number by the original number
7 - 622 = -615
-615 ÷ 622 = -0.9887459807073955
-0.9887459807073955 x 100 = -98.87%