28.71% is the change from 317 to 408
Calculation steps:
[( 408 - 317 ) ÷ 317] x 100 = 28.71%
Formula
Percentage change = [(408 - 317) / 317] x 100
Subtract the new number by the original number
408 - 317 = 91
91 ÷ 317 = 0.2870662460567823
0.2870662460567823 x 100 = 28.71%