28.24% is the change from 393 to 504
Calculation steps:
[( 504 - 393 ) ÷ 393] x 100 = 28.24%
Formula
Percentage change = [(504 - 393) / 393] x 100
Subtract the new number by the original number
504 - 393 = 111
111 ÷ 393 = 0.2824427480916031
0.2824427480916031 x 100 = 28.24%