42.57% is the change from 343 to 489
Calculation steps:
[( 489 - 343 ) ÷ 343] x 100 = 42.57%
Formula
Percentage change = [(489 - 343) / 343] x 100
Subtract the new number by the original number
489 - 343 = 146
146 ÷ 343 = 0.42565597667638483
0.42565597667638483 x 100 = 42.57%