20.16% is the change from 129 to 155
Calculation steps:
[( 155 - 129 ) ÷ 129] x 100 = 20.16%
Formula
Percentage change = [(155 - 129) / 129] x 100
Subtract the new number by the original number
155 - 129 = 26
26 ÷ 129 = 0.20155038759689922
0.20155038759689922 x 100 = 20.16%