-80.38% is the change from 999 to 196
Calculation steps:
[( 196 - 999 ) ÷ 999] x 100 = -80.38%
Formula
Percentage change = [(196 - 999) / 999] x 100
Subtract the new number by the original number
196 - 999 = -803
-803 ÷ 999 = -0.8038038038038038
-0.8038038038038038 x 100 = -80.38%