-36.15% is the change from 686 to 438
Calculation steps:
[( 438 - 686 ) ÷ 686] x 100 = -36.15%
Formula
Percentage change = [(438 - 686) / 686] x 100
Subtract the new number by the original number
438 - 686 = -248
-248 ÷ 686 = -0.36151603498542273
-0.36151603498542273 x 100 = -36.15%