3.7% is the change from 648 to 672
Calculation steps:
[( 672 - 648 ) ÷ 648] x 100 = 3.7%
Formula
Percentage change = [(672 - 648) / 648] x 100
Subtract the new number by the original number
672 - 648 = 24
24 ÷ 648 = 0.037037037037037035
0.037037037037037035 x 100 = 3.7%