0.9% is the change from 663 to 669
Calculation steps:
[( 669 - 663 ) ÷ 663] x 100 = 0.9%
Formula
Percentage change = [(669 - 663) / 663] x 100
Subtract the new number by the original number
669 - 663 = 6
6 ÷ 663 = 0.00904977375565611
0.00904977375565611 x 100 = 0.9%