10.26% is the change from 390 to 430
Calculation steps:
[( 430 - 390 ) ÷ 390] x 100 = 10.26%
Formula
Percentage change = [(430 - 390) / 390] x 100
Subtract the new number by the original number
430 - 390 = 40
40 ÷ 390 = 0.10256410256410256
0.10256410256410256 x 100 = 10.26%