144.61% is the change from 343 to 839
Calculation steps:
[( 839 - 343 ) ÷ 343] x 100 = 144.61%
Formula
Percentage change = [(839 - 343) / 343] x 100
Subtract the new number by the original number
839 - 343 = 496
496 ÷ 343 = 1.446064139941691
1.446064139941691 x 100 = 144.61%