-81.82% is the change from 55 to 10
Calculation steps:
[( 10 - 55 ) ÷ 55] x 100 = -81.82%
Formula
Percentage change = [(10 - 55) / 55] x 100
Subtract the new number by the original number
10 - 55 = -45
-45 ÷ 55 = -0.8181818181818182
-0.8181818181818182 x 100 = -81.82%