Add .class to match percentage

I want to add a span class to <div class="rate_text">73% match</div> ( in search.php?show=match&mode=extended )
That so i can make the percentage big and the text smaller.

I searched in a couple files ( search_profiles_ext.html, BxBaseSearchProfile.php, match.inc.php ), but didn't find the div. Someone a idea how to do it? 

Found it. Easily done with the language keys...