-44.54% is the change from 999 to 554
Calculation steps:
[( 554 - 999 ) ÷ 999] x 100 = -44.54%
Formula
Percentage change = [(554 - 999) / 999] x 100
Subtract the new number by the original number
554 - 999 = -445
-445 ÷ 999 = -0.44544544544544545
-0.44544544544544545 x 100 = -44.54%