-2.44% is the change from 821 to 801
Calculation steps:
[( 801 - 821 ) ÷ 821] x 100 = -2.44%
Formula
Percentage change = [(801 - 821) / 821] x 100
Subtract the new number by the original number
801 - 821 = -20
-20 ÷ 821 = -0.024360535931790498
-0.024360535931790498 x 100 = -2.44%