-97.95% is the change from 878 to 18
Calculation steps:
[( 18 - 878 ) ÷ 878] x 100 = -97.95%
Formula
Percentage change = [(18 - 878) / 878] x 100
Subtract the new number by the original number
18 - 878 = -860
-860 ÷ 878 = -0.979498861047836
-0.979498861047836 x 100 = -97.95%