28.93% is the change from 394 to 508
Calculation steps:
[( 508 - 394 ) ÷ 394] x 100 = 28.93%
Formula
Percentage change = [(508 - 394) / 394] x 100
Subtract the new number by the original number
508 - 394 = 114
114 ÷ 394 = 0.2893401015228426
0.2893401015228426 x 100 = 28.93%