-59.29% is the change from 990 to 403
Calculation steps:
[( 403 - 990 ) ÷ 990] x 100 = -59.29%
Formula
Percentage change = [(403 - 990) / 990] x 100
Subtract the new number by the original number
403 - 990 = -587
-587 ÷ 990 = -0.592929292929293
-0.592929292929293 x 100 = -59.29%