77.22% is the change from 518 to 918
Calculation steps:
[( 918 - 518 ) ÷ 518] x 100 = 77.22%
Formula
Percentage change = [(918 - 518) / 518] x 100
Subtract the new number by the original number
918 - 518 = 400
400 ÷ 518 = 0.7722007722007722
0.7722007722007722 x 100 = 77.22%