49.42% is the change from 518 to 774
Calculation steps:
[( 774 - 518 ) ÷ 518] x 100 = 49.42%
Formula
Percentage change = [(774 - 518) / 518] x 100
Subtract the new number by the original number
774 - 518 = 256
256 ÷ 518 = 0.4942084942084942
0.4942084942084942 x 100 = 49.42%