20.75% is the change from 424 to 512
Calculation steps:
[( 512 - 424 ) ÷ 424] x 100 = 20.75%
Formula
Percentage change = [(512 - 424) / 424] x 100
Subtract the new number by the original number
512 - 424 = 88
88 ÷ 424 = 0.20754716981132076
0.20754716981132076 x 100 = 20.75%