42.19% is the change from 512 to 728
Calculation steps:
[( 728 - 512 ) ÷ 512] x 100 = 42.19%
Formula
Percentage change = [(728 - 512) / 512] x 100
Subtract the new number by the original number
728 - 512 = 216
216 ÷ 512 = 0.421875
0.421875 x 100 = 42.19%