25.59% is the change from 512 to 643
Calculation steps:
[( 643 - 512 ) ÷ 512] x 100 = 25.59%
Formula
Percentage change = [(643 - 512) / 512] x 100
Subtract the new number by the original number
643 - 512 = 131
131 ÷ 512 = 0.255859375
0.255859375 x 100 = 25.59%