-1.95% is the change from 820 to 804
Calculation steps:
[( 804 - 820 ) ÷ 820] x 100 = -1.95%
Formula
Percentage change = [(804 - 820) / 820] x 100
Subtract the new number by the original number
804 - 820 = -16
-16 ÷ 820 = -0.01951219512195122
-0.01951219512195122 x 100 = -1.95%