30.23% is the change from 129 to 168
Calculation steps:
[( 168 - 129 ) ÷ 129] x 100 = 30.23%
Formula
Percentage change = [(168 - 129) / 129] x 100
Subtract the new number by the original number
168 - 129 = 39
39 ÷ 129 = 0.3023255813953488
0.3023255813953488 x 100 = 30.23%