9.52% is the change from 399 to 437
Calculation steps:
[( 437 - 399 ) ÷ 399] x 100 = 9.52%
Formula
Percentage change = [(437 - 399) / 399] x 100
Subtract the new number by the original number
437 - 399 = 38
38 ÷ 399 = 0.09523809523809523
0.09523809523809523 x 100 = 9.52%