2.24% is the change from 669 to 684
Calculation steps:
[( 684 - 669 ) ÷ 669] x 100 = 2.24%
Formula
Percentage change = [(684 - 669) / 669] x 100
Subtract the new number by the original number
684 - 669 = 15
15 ÷ 669 = 0.02242152466367713
0.02242152466367713 x 100 = 2.24%