-20.84% is the change from 859 to 680
Calculation steps:
[( 680 - 859 ) ÷ 859] x 100 = -20.84%
Formula
Percentage change = [(680 - 859) / 859] x 100
Subtract the new number by the original number
680 - 859 = -179
-179 ÷ 859 = -0.20838183934807916
-0.20838183934807916 x 100 = -20.84%