-5.8% is the change from 879 to 828
Calculation steps:
[( 828 - 879 ) ÷ 879] x 100 = -5.8%
Formula
Percentage change = [(828 - 879) / 879] x 100
Subtract the new number by the original number
828 - 879 = -51
-51 ÷ 879 = -0.05802047781569966
-0.05802047781569966 x 100 = -5.8%