8.31% is the change from 397 to 430
Calculation steps:
[( 430 - 397 ) ÷ 397] x 100 = 8.31%
Formula
Percentage change = [(430 - 397) / 397] x 100
Subtract the new number by the original number
430 - 397 = 33
33 ÷ 397 = 0.08312342569269521
0.08312342569269521 x 100 = 8.31%