342.74% is the change from 117 to 518
Calculation steps:
[( 518 - 117 ) ÷ 117] x 100 = 342.74%
Formula
Percentage change = [(518 - 117) / 117] x 100
Subtract the new number by the original number
518 - 117 = 401
401 ÷ 117 = 3.427350427350427
3.427350427350427 x 100 = 342.74%