39.27% is the change from 438 to 610
Calculation steps:
[( 610 - 438 ) ÷ 438] x 100 = 39.27%
Formula
Percentage change = [(610 - 438) / 438] x 100
Subtract the new number by the original number
610 - 438 = 172
172 ÷ 438 = 0.3926940639269406
0.3926940639269406 x 100 = 39.27%