9.97% is the change from 391 to 430
Calculation steps:
[( 430 - 391 ) ÷ 391] x 100 = 9.97%
Formula
Percentage change = [(430 - 391) / 391] x 100
Subtract the new number by the original number
430 - 391 = 39
39 ÷ 391 = 0.09974424552429667
0.09974424552429667 x 100 = 9.97%