6.42% is the change from 623 to 663
Calculation steps:
[( 663 - 623 ) ÷ 623] x 100 = 6.42%
Formula
Percentage change = [(663 - 623) / 623] x 100
Subtract the new number by the original number
663 - 623 = 40
40 ÷ 623 = 0.06420545746388442
0.06420545746388442 x 100 = 6.42%