-3.53% is the change from 878 to 847
Calculation steps:
[( 847 - 878 ) ÷ 878] x 100 = -3.53%
Formula
Percentage change = [(847 - 878) / 878] x 100
Subtract the new number by the original number
847 - 878 = -31
-31 ÷ 878 = -0.03530751708428246
-0.03530751708428246 x 100 = -3.53%