3.07% is the change from 684 to 705
Calculation steps:
[( 705 - 684 ) ÷ 684] x 100 = 3.07%
Formula
Percentage change = [(705 - 684) / 684] x 100
Subtract the new number by the original number
705 - 684 = 21
21 ÷ 684 = 0.03070175438596491
0.03070175438596491 x 100 = 3.07%