-95.58% is the change from 475 to 21
Calculation steps:
[( 21 - 475 ) ÷ 475] x 100 = -95.58%
Formula
Percentage change = [(21 - 475) / 475] x 100
Subtract the new number by the original number
21 - 475 = -454
-454 ÷ 475 = -0.9557894736842105
-0.9557894736842105 x 100 = -95.58%