78.25% is the change from 515 to 918
Calculation steps:
[( 918 - 515 ) ÷ 515] x 100 = 78.25%
Formula
Percentage change = [(918 - 515) / 515] x 100
Subtract the new number by the original number
918 - 515 = 403
403 ÷ 515 = 0.7825242718446602
0.7825242718446602 x 100 = 78.25%