-42.83% is the change from 990 to 566
Calculation steps:
[( 566 - 990 ) ÷ 990] x 100 = -42.83%
Formula
Percentage change = [(566 - 990) / 990] x 100
Subtract the new number by the original number
566 - 990 = -424
-424 ÷ 990 = -0.42828282828282827
-0.42828282828282827 x 100 = -42.83%