68.47% is the change from 406 to 684
Calculation steps:
[( 684 - 406 ) ÷ 406] x 100 = 68.47%
Formula
Percentage change = [(684 - 406) / 406] x 100
Subtract the new number by the original number
684 - 406 = 278
278 ÷ 406 = 0.6847290640394089
0.6847290640394089 x 100 = 68.47%