-28.64% is the change from 220 to 157
Calculation steps:
[( 157 - 220 ) ÷ 220] x 100 = -28.64%
Formula
Percentage change = [(157 - 220) / 220] x 100
Subtract the new number by the original number
157 - 220 = -63
-63 ÷ 220 = -0.2863636363636364
-0.2863636363636364 x 100 = -28.64%