-44.44% is the change from 99 to 55
Calculation steps:
[( 55 - 99 ) ÷ 99] x 100 = -44.44%
Formula
Percentage change = [(55 - 99) / 99] x 100
Subtract the new number by the original number
55 - 99 = -44
-44 ÷ 99 = -0.4444444444444444
-0.4444444444444444 x 100 = -44.44%