4.35% is the change from 644 to 672
Calculation steps:
[( 672 - 644 ) ÷ 644] x 100 = 4.35%
Formula
Percentage change = [(672 - 644) / 644] x 100
Subtract the new number by the original number
672 - 644 = 28
28 ÷ 644 = 0.043478260869565216
0.043478260869565216 x 100 = 4.35%