39.65% is the change from 227 to 317
Calculation steps:
[( 317 - 227 ) ÷ 227] x 100 = 39.65%
Formula
Percentage change = [(317 - 227) / 227] x 100
Subtract the new number by the original number
317 - 227 = 90
90 ÷ 227 = 0.3964757709251101
0.3964757709251101 x 100 = 39.65%