100.58% is the change from 342 to 686
Calculation steps:
[( 686 - 342 ) ÷ 342] x 100 = 100.58%
Formula
Percentage change = [(686 - 342) / 342] x 100
Subtract the new number by the original number
686 - 342 = 344
344 ÷ 342 = 1.0058479532163742
1.0058479532163742 x 100 = 100.58%