37.4% is the change from 393 to 540
Calculation steps:
[( 540 - 393 ) ÷ 393] x 100 = 37.4%
Formula
Percentage change = [(540 - 393) / 393] x 100
Subtract the new number by the original number
540 - 393 = 147
147 ÷ 393 = 0.37404580152671757
0.37404580152671757 x 100 = 37.4%