3.18% is the change from 629 to 649
Calculation steps:
[( 649 - 629 ) ÷ 629] x 100 = 3.18%
Formula
Percentage change = [(649 - 629) / 629] x 100
Subtract the new number by the original number
649 - 629 = 20
20 ÷ 629 = 0.03179650238473768
0.03179650238473768 x 100 = 3.18%