13.7% is the change from 343 to 390
Calculation steps:
[( 390 - 343 ) ÷ 343] x 100 = 13.7%
Formula
Percentage change = [(390 - 343) / 343] x 100
Subtract the new number by the original number
390 - 343 = 47
47 ÷ 343 = 0.13702623906705538
0.13702623906705538 x 100 = 13.7%