39.94% is the change from 343 to 480
Calculation steps:
[( 480 - 343 ) ÷ 343] x 100 = 39.94%
Formula
Percentage change = [(480 - 343) / 343] x 100
Subtract the new number by the original number
480 - 343 = 137
137 ÷ 343 = 0.39941690962099125
0.39941690962099125 x 100 = 39.94%