31.13% is the change from 318 to 417
Calculation steps:
[( 417 - 318 ) ÷ 318] x 100 = 31.13%
Formula
Percentage change = [(417 - 318) / 318] x 100
Subtract the new number by the original number
417 - 318 = 99
99 ÷ 318 = 0.3113207547169811
0.3113207547169811 x 100 = 31.13%