59.57% is the change from 512 to 817
Calculation steps:
[( 817 - 512 ) ÷ 512] x 100 = 59.57%
Formula
Percentage change = [(817 - 512) / 512] x 100
Subtract the new number by the original number
817 - 512 = 305
305 ÷ 512 = 0.595703125
0.595703125 x 100 = 59.57%