58.2% is the change from 512 to 810
Calculation steps:
[( 810 - 512 ) ÷ 512] x 100 = 58.2%
Formula
Percentage change = [(810 - 512) / 512] x 100
Subtract the new number by the original number
810 - 512 = 298
298 ÷ 512 = 0.58203125
0.58203125 x 100 = 58.2%