51.02% is the change from 343 to 518
Calculation steps:
[( 518 - 343 ) ÷ 343] x 100 = 51.02%
Formula
Percentage change = [(518 - 343) / 343] x 100
Subtract the new number by the original number
518 - 343 = 175
175 ÷ 343 = 0.5102040816326531
0.5102040816326531 x 100 = 51.02%