-6.79% is the change from 942 to 878
Calculation steps:
[( 878 - 942 ) ÷ 942] x 100 = -6.79%
Formula
Percentage change = [(878 - 942) / 942] x 100
Subtract the new number by the original number
878 - 942 = -64
-64 ÷ 942 = -0.06794055201698514
-0.06794055201698514 x 100 = -6.79%