56.31% is the change from 515 to 805
Calculation steps:
[( 805 - 515 ) ÷ 515] x 100 = 56.31%
Formula
Percentage change = [(805 - 515) / 515] x 100
Subtract the new number by the original number
805 - 515 = 290
290 ÷ 515 = 0.5631067961165048
0.5631067961165048 x 100 = 56.31%