48.39% is the change from 155 to 230
Calculation steps:
[( 230 - 155 ) ÷ 155] x 100 = 48.39%
Formula
Percentage change = [(230 - 155) / 155] x 100
Subtract the new number by the original number
230 - 155 = 75
75 ÷ 155 = 0.4838709677419355
0.4838709677419355 x 100 = 48.39%