-19.79% is the change from 859 to 689
Calculation steps:
[( 689 - 859 ) ÷ 859] x 100 = -19.79%
Formula
Percentage change = [(689 - 859) / 859] x 100
Subtract the new number by the original number
689 - 859 = -170
-170 ÷ 859 = -0.1979045401629802
-0.1979045401629802 x 100 = -19.79%