39.04% is the change from 228 to 317
Calculation steps:
[( 317 - 228 ) ÷ 228] x 100 = 39.04%
Formula
Percentage change = [(317 - 228) / 228] x 100
Subtract the new number by the original number
317 - 228 = 89
89 ÷ 228 = 0.39035087719298245
0.39035087719298245 x 100 = 39.04%