57.64% is the change from 517 to 815
Calculation steps:
[( 815 - 517 ) ÷ 517] x 100 = 57.64%
Formula
Percentage change = [(815 - 517) / 517] x 100
Subtract the new number by the original number
815 - 517 = 298
298 ÷ 517 = 0.5764023210831721
0.5764023210831721 x 100 = 57.64%