30.88% is the change from 136 to 178
Calculation steps:
[( 178 - 136 ) ÷ 136] x 100 = 30.88%
Formula
Percentage change = [(178 - 136) / 136] x 100
Subtract the new number by the original number
178 - 136 = 42
42 ÷ 136 = 0.3088235294117647
0.3088235294117647 x 100 = 30.88%