-16.41% is the change from 981 to 820
Calculation steps:
[( 820 - 981 ) ÷ 981] x 100 = -16.41%
Formula
Percentage change = [(820 - 981) / 981] x 100
Subtract the new number by the original number
820 - 981 = -161
-161 ÷ 981 = -0.16411824668705402
-0.16411824668705402 x 100 = -16.41%