-2.68% is the change from 821 to 799
Calculation steps:
[( 799 - 821 ) ÷ 821] x 100 = -2.68%
Formula
Percentage change = [(799 - 821) / 821] x 100
Subtract the new number by the original number
799 - 821 = -22
-22 ÷ 821 = -0.02679658952496955
-0.02679658952496955 x 100 = -2.68%