25.39% is the change from 512 to 642
Calculation steps:
[( 642 - 512 ) ÷ 512] x 100 = 25.39%
Formula
Percentage change = [(642 - 512) / 512] x 100
Subtract the new number by the original number
642 - 512 = 130
130 ÷ 512 = 0.25390625
0.25390625 x 100 = 25.39%