51.46% is the change from 342 to 518
Calculation steps:
[( 518 - 342 ) ÷ 342] x 100 = 51.46%
Formula
Percentage change = [(518 - 342) / 342] x 100
Subtract the new number by the original number
518 - 342 = 176
176 ÷ 342 = 0.5146198830409356
0.5146198830409356 x 100 = 51.46%