-16.84% is the change from 986 to 820
Calculation steps:
[( 820 - 986 ) ÷ 986] x 100 = -16.84%
Formula
Percentage change = [(820 - 986) / 986] x 100
Subtract the new number by the original number
820 - 986 = -166
-166 ÷ 986 = -0.16835699797160245
-0.16835699797160245 x 100 = -16.84%