-16.31% is the change from 981 to 821
Calculation steps:
[( 821 - 981 ) ÷ 981] x 100 = -16.31%
Formula
Percentage change = [(821 - 981) / 981] x 100
Subtract the new number by the original number
821 - 981 = -160
-160 ÷ 981 = -0.16309887869520898
-0.16309887869520898 x 100 = -16.31%