16.89% is the change from 438 to 512
Calculation steps:
[( 512 - 438 ) ÷ 438] x 100 = 16.89%
Formula
Percentage change = [(512 - 438) / 438] x 100
Subtract the new number by the original number
512 - 438 = 74
74 ÷ 438 = 0.1689497716894977
0.1689497716894977 x 100 = 16.89%