12.02% is the change from 391 to 438
Calculation steps:
[( 438 - 391 ) ÷ 391] x 100 = 12.02%
Formula
Percentage change = [(438 - 391) / 391] x 100
Subtract the new number by the original number
438 - 391 = 47
47 ÷ 391 = 0.12020460358056266
0.12020460358056266 x 100 = 12.02%