31.28% is the change from 438 to 575
Calculation steps:
[( 575 - 438 ) ÷ 438] x 100 = 31.28%
Formula
Percentage change = [(575 - 438) / 438] x 100
Subtract the new number by the original number
575 - 438 = 137
137 ÷ 438 = 0.3127853881278539
0.3127853881278539 x 100 = 31.28%