2.09% is the change from 670 to 684
Calculation steps:
[( 684 - 670 ) ÷ 670] x 100 = 2.09%
Formula
Percentage change = [(684 - 670) / 670] x 100
Subtract the new number by the original number
684 - 670 = 14
14 ÷ 670 = 0.020895522388059702
0.020895522388059702 x 100 = 2.09%