100.58% is the change from 171 to 343
Calculation steps:
[( 343 - 171 ) ÷ 171] x 100 = 100.58%
Formula
Percentage change = [(343 - 171) / 171] x 100
Subtract the new number by the original number
343 - 171 = 172
172 ÷ 171 = 1.0058479532163742
1.0058479532163742 x 100 = 100.58%