3.23% is the change from 651 to 672
Calculation steps:
[( 672 - 651 ) ÷ 651] x 100 = 3.23%
Formula
Percentage change = [(672 - 651) / 651] x 100
Subtract the new number by the original number
672 - 651 = 21
21 ÷ 651 = 0.03225806451612903
0.03225806451612903 x 100 = 3.23%