-5.31% is the change from 867 to 821
Calculation steps:
[( 821 - 867 ) ÷ 867] x 100 = -5.31%
Formula
Percentage change = [(821 - 867) / 867] x 100
Subtract the new number by the original number
821 - 867 = -46
-46 ÷ 867 = -0.0530565167243368
-0.0530565167243368 x 100 = -5.31%