-22.97% is the change from 222 to 171
Calculation steps:
[( 171 - 222 ) ÷ 222] x 100 = -22.97%
Formula
Percentage change = [(171 - 222) / 222] x 100
Subtract the new number by the original number
171 - 222 = -51
-51 ÷ 222 = -0.22972972972972974
-0.22972972972972974 x 100 = -22.97%