42.24% is the change from 161 to 229
Calculation steps:
[( 229 - 161 ) ÷ 161] x 100 = 42.24%
Formula
Percentage change = [(229 - 161) / 161] x 100
Subtract the new number by the original number
229 - 161 = 68
68 ÷ 161 = 0.422360248447205
0.422360248447205 x 100 = 42.24%