29.82% is the change from 171 to 222
Calculation steps:
[( 222 - 171 ) ÷ 171] x 100 = 29.82%
Formula
Percentage change = [(222 - 171) / 171] x 100
Subtract the new number by the original number
222 - 171 = 51
51 ÷ 171 = 0.2982456140350877
0.2982456140350877 x 100 = 29.82%