-80.4% is the change from 990 to 194
Calculation steps:
[( 194 - 990 ) ÷ 990] x 100 = -80.4%
Formula
Percentage change = [(194 - 990) / 990] x 100
Subtract the new number by the original number
194 - 990 = -796
-796 ÷ 990 = -0.804040404040404
-0.804040404040404 x 100 = -80.4%