3.19% is the change from 627 to 647
Calculation steps:
[( 647 - 627 ) ÷ 627] x 100 = 3.19%
Formula
Percentage change = [(647 - 627) / 627] x 100
Subtract the new number by the original number
647 - 627 = 20
20 ÷ 627 = 0.03189792663476874
0.03189792663476874 x 100 = 3.19%