30.81% is the change from 396 to 518
Calculation steps:
[( 518 - 396 ) ÷ 396] x 100 = 30.81%
Formula
Percentage change = [(518 - 396) / 396] x 100
Subtract the new number by the original number
518 - 396 = 122
122 ÷ 396 = 0.30808080808080807
0.30808080808080807 x 100 = 30.81%