Excel: 2 formulas in 1 cel

Hey guys,

I have a little problem with excel. I did allready research on the web but
nothing works.
I want 2 formulas in 1 cel but my percentage doesnt work.
You can see attached my excel file.
I want the winst/verlies and rendement in one cel.

Who can help me?
Thank you

Attached Files

Hulp nodig.xlsx (22.3 KB)