38.77% is the change from 227 to 315
Calculation steps:
[( 315 - 227 ) ÷ 227] x 100 = 38.77%
Formula
Percentage change = [(315 - 227) / 227] x 100
Subtract the new number by the original number
315 - 227 = 88
88 ÷ 227 = 0.3876651982378855
0.3876651982378855 x 100 = 38.77%