-1.95% is the change from 821 to 805
Calculation steps:
[( 805 - 821 ) ÷ 821] x 100 = -1.95%
Formula
Percentage change = [(805 - 821) / 821] x 100
Subtract the new number by the original number
805 - 821 = -16
-16 ÷ 821 = -0.0194884287454324
-0.0194884287454324 x 100 = -1.95%