8.39% is the change from 620 to 672
Calculation steps:
[( 672 - 620 ) ÷ 620] x 100 = 8.39%
Formula
Percentage change = [(672 - 620) / 620] x 100
Subtract the new number by the original number
672 - 620 = 52
52 ÷ 620 = 0.08387096774193549
0.08387096774193549 x 100 = 8.39%