58.45% is the change from 515 to 816
Calculation steps:
[( 816 - 515 ) ÷ 515] x 100 = 58.45%
Formula
Percentage change = [(816 - 515) / 515] x 100
Subtract the new number by the original number
816 - 515 = 301
301 ÷ 515 = 0.5844660194174758
0.5844660194174758 x 100 = 58.45%