68.14% is the change from 408 to 686
Calculation steps:
[( 686 - 408 ) ÷ 408] x 100 = 68.14%
Formula
Percentage change = [(686 - 408) / 408] x 100
Subtract the new number by the original number
686 - 408 = 278
278 ÷ 408 = 0.6813725490196079
0.6813725490196079 x 100 = 68.14%