-99.77% is the change from 878 to 2
Calculation steps:
[( 2 - 878 ) ÷ 878] x 100 = -99.77%
Formula
Percentage change = [(2 - 878) / 878] x 100
Subtract the new number by the original number
2 - 878 = -876
-876 ÷ 878 = -0.9977220956719818
-0.9977220956719818 x 100 = -99.77%