-55.81% is the change from 878 to 388
Calculation steps:
[( 388 - 878 ) ÷ 878] x 100 = -55.81%
Formula
Percentage change = [(388 - 878) / 878] x 100
Subtract the new number by the original number
388 - 878 = -490
-490 ÷ 878 = -0.5580865603644647
-0.5580865603644647 x 100 = -55.81%