39.5% is the change from 438 to 611
Calculation steps:
[( 611 - 438 ) ÷ 438] x 100 = 39.5%
Formula
Percentage change = [(611 - 438) / 438] x 100
Subtract the new number by the original number
611 - 438 = 173
173 ÷ 438 = 0.3949771689497717
0.3949771689497717 x 100 = 39.5%