-7.73% is the change from 220 to 203
Calculation steps:
[( 203 - 220 ) ÷ 220] x 100 = -7.73%
Formula
Percentage change = [(203 - 220) / 220] x 100
Subtract the new number by the original number
203 - 220 = -17
-17 ÷ 220 = -0.07727272727272727
-0.07727272727272727 x 100 = -7.73%