-53.47% is the change from 475 to 221
Calculation steps:
[( 221 - 475 ) ÷ 475] x 100 = -53.47%
Formula
Percentage change = [(221 - 475) / 475] x 100
Subtract the new number by the original number
221 - 475 = -254
-254 ÷ 475 = -0.5347368421052632
-0.5347368421052632 x 100 = -53.47%