2.31% is the change from 648 to 663
Calculation steps:
[( 663 - 648 ) ÷ 648] x 100 = 2.31%
Formula
Percentage change = [(663 - 648) / 648] x 100
Subtract the new number by the original number
663 - 648 = 15
15 ÷ 648 = 0.023148148148148147
0.023148148148148147 x 100 = 2.31%