-44.04% is the change from 999 to 559
Calculation steps:
[( 559 - 999 ) ÷ 999] x 100 = -44.04%
Formula
Percentage change = [(559 - 999) / 999] x 100
Subtract the new number by the original number
559 - 999 = -440
-440 ÷ 999 = -0.44044044044044045
-0.44044044044044045 x 100 = -44.04%