-22.52% is the change from 222 to 172
Calculation steps:
[( 172 - 222 ) ÷ 222] x 100 = -22.52%
Formula
Percentage change = [(172 - 222) / 222] x 100
Subtract the new number by the original number
172 - 222 = -50
-50 ÷ 222 = -0.22522522522522523
-0.22522522522522523 x 100 = -22.52%