-99.77% is the change from 861 to 2
Calculation steps:
[( 2 - 861 ) ÷ 861] x 100 = -99.77%
Formula
Percentage change = [(2 - 861) / 861] x 100
Subtract the new number by the original number
2 - 861 = -859
-859 ÷ 861 = -0.9976771196283392
-0.9976771196283392 x 100 = -99.77%