47.74% is the change from 155 to 229
Calculation steps:
[( 229 - 155 ) ÷ 155] x 100 = 47.74%
Formula
Percentage change = [(229 - 155) / 155] x 100
Subtract the new number by the original number
229 - 155 = 74
74 ÷ 155 = 0.4774193548387097
0.4774193548387097 x 100 = 47.74%