30.79% is the change from 393 to 514
Calculation steps:
[( 514 - 393 ) ÷ 393] x 100 = 30.79%
Formula
Percentage change = [(514 - 393) / 393] x 100
Subtract the new number by the original number
514 - 393 = 121
121 ÷ 393 = 0.30788804071246817
0.30788804071246817 x 100 = 30.79%