54.17% is the change from 515 to 794
Calculation steps:
[( 794 - 515 ) ÷ 515] x 100 = 54.17%
Formula
Percentage change = [(794 - 515) / 515] x 100
Subtract the new number by the original number
794 - 515 = 279
279 ÷ 515 = 0.541747572815534
0.541747572815534 x 100 = 54.17%