29.01% is the change from 393 to 507
Calculation steps:
[( 507 - 393 ) ÷ 393] x 100 = 29.01%
Formula
Percentage change = [(507 - 393) / 393] x 100
Subtract the new number by the original number
507 - 393 = 114
114 ÷ 393 = 0.2900763358778626
0.2900763358778626 x 100 = 29.01%