-56.06% is the change from 990 to 435
Calculation steps:
[( 435 - 990 ) ÷ 990] x 100 = -56.06%
Formula
Percentage change = [(435 - 990) / 990] x 100
Subtract the new number by the original number
435 - 990 = -555
-555 ÷ 990 = -0.5606060606060606
-0.5606060606060606 x 100 = -56.06%