4.34% is the change from 438 to 457
Calculation steps:
[( 457 - 438 ) ÷ 438] x 100 = 4.34%
Formula
Percentage change = [(457 - 438) / 438] x 100
Subtract the new number by the original number
457 - 438 = 19
19 ÷ 438 = 0.04337899543378995
0.04337899543378995 x 100 = 4.34%