-37.36% is the change from 878 to 550
Calculation steps:
[( 550 - 878 ) ÷ 878] x 100 = -37.36%
Formula
Percentage change = [(550 - 878) / 878] x 100
Subtract the new number by the original number
550 - 878 = -328
-328 ÷ 878 = -0.3735763097949886
-0.3735763097949886 x 100 = -37.36%