31.25% is the change from 512 to 672
Calculation steps:
[( 672 - 512 ) ÷ 512] x 100 = 31.25%
Formula
Percentage change = [(672 - 512) / 512] x 100
Subtract the new number by the original number
672 - 512 = 160
160 ÷ 512 = 0.3125
0.3125 x 100 = 31.25%