-95.56% is the change from 878 to 39
Calculation steps:
[( 39 - 878 ) ÷ 878] x 100 = -95.56%
Formula
Percentage change = [(39 - 878) / 878] x 100
Subtract the new number by the original number
39 - 878 = -839
-839 ÷ 878 = -0.9555808656036446
-0.9555808656036446 x 100 = -95.56%