I am getting result after one minute  in formula field like this   0 Days 0 Hours -479 Minutes.
I need result like this    0 Days 7 Hours -59 Minutes.

This is my formula but it's not working properly

    TEXT( FLOOR(Now() - CreatedDate))  & " Days " &TEXT(
    ROUND(MOD((Now() - CreatedDate)*24,24),0) )  &" Hours " &
    TEXT(ROUND(MOD((Now() - CreatedDate)*1440,60),0)-480
    ) &" Minutes "

Please if you have any solution thanks in advance.