128.15% is the change from 135 to 308
Calculation steps:
[( 308 - 135 ) ÷ 135] x 100 = 128.15%
Formula
Percentage change = [(308 - 135) / 135] x 100
Subtract the new number by the original number
308 - 135 = 173
173 ÷ 135 = 1.2814814814814814
1.2814814814814814 x 100 = 128.15%