2.3% is the change from 609 to 623
Calculation steps:
[( 623 - 609 ) ÷ 609] x 100 = 2.3%
Formula
Percentage change = [(623 - 609) / 609] x 100
Subtract the new number by the original number
623 - 609 = 14
14 ÷ 609 = 0.022988505747126436
0.022988505747126436 x 100 = 2.3%