-40.38% is the change from 686 to 409
Calculation steps:
[( 409 - 686 ) ÷ 686] x 100 = -40.38%
Formula
Percentage change = [(409 - 686) / 686] x 100
Subtract the new number by the original number
409 - 686 = -277
-277 ÷ 686 = -0.4037900874635568
-0.4037900874635568 x 100 = -40.38%