-44.84% is the change from 999 to 551
Calculation steps:
[( 551 - 999 ) ÷ 999] x 100 = -44.84%
Formula
Percentage change = [(551 - 999) / 999] x 100
Subtract the new number by the original number
551 - 999 = -448
-448 ÷ 999 = -0.44844844844844844
-0.44844844844844844 x 100 = -44.84%