39.29% is the change from 168 to 234
Calculation steps:
[( 234 - 168 ) ÷ 168] x 100 = 39.29%
Formula
Percentage change = [(234 - 168) / 168] x 100
Subtract the new number by the original number
234 - 168 = 66
66 ÷ 168 = 0.39285714285714285
0.39285714285714285 x 100 = 39.29%