truncate file path from left, not from right ( sprintf ?)

Hi maxers

i want to shorten a file path, ideally, it would leave only the top right 2 folders of the path, so this:
Mycomputer:/Users/myself/Music/My Samples/keep this path/keep this path/
would end up with:
/keep this path/keep this path/
how can I truncate the string like that?

The only thing i found is printf in attached example.
it works, but it would truncate from the right and not by words but letters.

greetings
emanuel

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