6.21% is the change from 628 to 667
Calculation steps:
[( 667 - 628 ) ÷ 628] x 100 = 6.21%
Formula
Percentage change = [(667 - 628) / 628] x 100
Subtract the new number by the original number
667 - 628 = 39
39 ÷ 628 = 0.06210191082802548
0.06210191082802548 x 100 = 6.21%