-34.4% is the change from 686 to 450
Calculation steps:
[( 450 - 686 ) ÷ 686] x 100 = -34.4%
Formula
Percentage change = [(450 - 686) / 686] x 100
Subtract the new number by the original number
450 - 686 = -236
-236 ÷ 686 = -0.34402332361516036
-0.34402332361516036 x 100 = -34.4%