30.41% is the change from 171 to 223
Calculation steps:
[( 223 - 171 ) ÷ 171] x 100 = 30.41%
Formula
Percentage change = [(223 - 171) / 171] x 100
Subtract the new number by the original number
223 - 171 = 52
52 ÷ 171 = 0.30409356725146197
0.30409356725146197 x 100 = 30.41%