6.81% is the change from 323 to 345
Calculation steps:
[( 345 - 323 ) ÷ 323] x 100 = 6.81%
Formula
Percentage change = [(345 - 323) / 323] x 100
Subtract the new number by the original number
345 - 323 = 22
22 ÷ 323 = 0.06811145510835913
0.06811145510835913 x 100 = 6.81%