42.86% is the change from 343 to 490
Calculation steps:
[( 490 - 343 ) ÷ 343] x 100 = 42.86%
Formula
Percentage change = [(490 - 343) / 343] x 100
Subtract the new number by the original number
490 - 343 = 147
147 ÷ 343 = 0.42857142857142855
0.42857142857142855 x 100 = 42.86%