28.54% is the change from 396 to 509
Calculation steps:
[( 509 - 396 ) ÷ 396] x 100 = 28.54%
Formula
Percentage change = [(509 - 396) / 396] x 100
Subtract the new number by the original number
509 - 396 = 113
113 ÷ 396 = 0.28535353535353536
0.28535353535353536 x 100 = 28.54%