28.57% is the change from 133 to 171
Calculation steps:
[( 171 - 133 ) ÷ 133] x 100 = 28.57%
Formula
Percentage change = [(171 - 133) / 133] x 100
Subtract the new number by the original number
171 - 133 = 38
38 ÷ 133 = 0.2857142857142857
0.2857142857142857 x 100 = 28.57%