9.58% is the change from 313 to 343
Calculation steps:
[( 343 - 313 ) ÷ 313] x 100 = 9.58%
Formula
Percentage change = [(343 - 313) / 313] x 100
Subtract the new number by the original number
343 - 313 = 30
30 ÷ 313 = 0.09584664536741214
0.09584664536741214 x 100 = 9.58%