Boxed color does not lift dark color. You have to have your hair bleached first and THEN recolored.
The process is called "color correction" and it's expensive/time consuming because black hair color doesn't lift easily. It damages your hair too, making it feel like straw.
Do NOT attempt to do this yourself because you'll jack it up and then it gets even more expensive to fix. Schedule a consult with a hair dresser to get a quote on what it will cost. A consult is free and only takes 15 minutes.
There's actually box dyes especially made for dark hair in the garnier brand It's called Nutrisse Ultra color It's specially made to transform dark hair they have three shades of browns,blacks and reds :)