2.47% is the change from 647 to 663
Calculation steps:
[( 663 - 647 ) ÷ 647] x 100 = 2.47%
Formula
Percentage change = [(663 - 647) / 647] x 100
Subtract the new number by the original number
663 - 647 = 16
16 ÷ 647 = 0.02472952086553323
0.02472952086553323 x 100 = 2.47%