-21.02% is the change from 861 to 680
Calculation steps:
[( 680 - 861 ) ÷ 861] x 100 = -21.02%
Formula
Percentage change = [(680 - 861) / 861] x 100
Subtract the new number by the original number
680 - 861 = -181
-181 ÷ 861 = -0.21022067363530778
-0.21022067363530778 x 100 = -21.02%