40.24% is the change from 164 to 230
Calculation steps:
[( 230 - 164 ) ÷ 164] x 100 = 40.24%
Formula
Percentage change = [(230 - 164) / 164] x 100
Subtract the new number by the original number
230 - 164 = 66
66 ÷ 164 = 0.4024390243902439
0.4024390243902439 x 100 = 40.24%