6.9% is the change from 623 to 666
Calculation steps:
[( 666 - 623 ) ÷ 623] x 100 = 6.9%
Formula
Percentage change = [(666 - 623) / 623] x 100
Subtract the new number by the original number
666 - 623 = 43
43 ÷ 623 = 0.06902086677367576
0.06902086677367576 x 100 = 6.9%