3.1% is the change from 678 to 699
Calculation steps:
[( 699 - 678 ) ÷ 678] x 100 = 3.1%
Formula
Percentage change = [(699 - 678) / 678] x 100
Subtract the new number by the original number
699 - 678 = 21
21 ÷ 678 = 0.030973451327433628
0.030973451327433628 x 100 = 3.1%