-96.92% is the change from 878 to 27
Calculation steps:
[( 27 - 878 ) ÷ 878] x 100 = -96.92%
Formula
Percentage change = [(27 - 878) / 878] x 100
Subtract the new number by the original number
27 - 878 = -851
-851 ÷ 878 = -0.969248291571754
-0.969248291571754 x 100 = -96.92%