-2.32% is the change from 820 to 801
Calculation steps:
[( 801 - 820 ) ÷ 820] x 100 = -2.32%
Formula
Percentage change = [(801 - 820) / 820] x 100
Subtract the new number by the original number
801 - 820 = -19
-19 ÷ 820 = -0.023170731707317073
-0.023170731707317073 x 100 = -2.32%