-44.89% is the change from 998 to 550
Calculation steps:
[( 550 - 998 ) ÷ 998] x 100 = -44.89%
Formula
Percentage change = [(550 - 998) / 998] x 100
Subtract the new number by the original number
550 - 998 = -448
-448 ÷ 998 = -0.44889779559118237
-0.44889779559118237 x 100 = -44.89%