57.28% is the change from 515 to 810
Calculation steps:
[( 810 - 515 ) ÷ 515] x 100 = 57.28%
Formula
Percentage change = [(810 - 515) / 515] x 100
Subtract the new number by the original number
810 - 515 = 295
295 ÷ 515 = 0.5728155339805825
0.5728155339805825 x 100 = 57.28%