-99.66% is the change from 878 to 3
Calculation steps:
[( 3 - 878 ) ÷ 878] x 100 = -99.66%
Formula
Percentage change = [(3 - 878) / 878] x 100
Subtract the new number by the original number
3 - 878 = -875
-875 ÷ 878 = -0.9965831435079726
-0.9965831435079726 x 100 = -99.66%