-98.61% is the change from 861 to 12
Calculation steps:
[( 12 - 861 ) ÷ 861] x 100 = -98.61%
Formula
Percentage change = [(12 - 861) / 861] x 100
Subtract the new number by the original number
12 - 861 = -849
-849 ÷ 861 = -0.9860627177700348
-0.9860627177700348 x 100 = -98.61%