-21.05% is the change from 860 to 679
Calculation steps:
[( 679 - 860 ) ÷ 860] x 100 = -21.05%
Formula
Percentage change = [(679 - 860) / 860] x 100
Subtract the new number by the original number
679 - 860 = -181
-181 ÷ 860 = -0.21046511627906977
-0.21046511627906977 x 100 = -21.05%