77.03% is the change from 518 to 917
Calculation steps:
[( 917 - 518 ) ÷ 518] x 100 = 77.03%
Formula
Percentage change = [(917 - 518) / 518] x 100
Subtract the new number by the original number
917 - 518 = 399
399 ÷ 518 = 0.7702702702702703
0.7702702702702703 x 100 = 77.03%