-46.46% is the change from 990 to 530
Calculation steps:
[( 530 - 990 ) ÷ 990] x 100 = -46.46%
Formula
Percentage change = [(530 - 990) / 990] x 100
Subtract the new number by the original number
530 - 990 = -460
-460 ÷ 990 = -0.46464646464646464
-0.46464646464646464 x 100 = -46.46%