-90.91% is the change from 55 to 5
Calculation steps:
[( 5 - 55 ) ÷ 55] x 100 = -90.91%
Formula
Percentage change = [(5 - 55) / 55] x 100
Subtract the new number by the original number
5 - 55 = -50
-50 ÷ 55 = -0.9090909090909091
-0.9090909090909091 x 100 = -90.91%