A bit of a change for show team (8)
I believe the answer is:
somewhat
'a bit' is the definition.
('somewhat' means 'a bit' or 'slightly')
'change for show team' is the wordplay.
'change for' is an anagram indicator.
'show'+'team'='showteam'
'showteam' anagrammed gives 'SOMEWHAT'.
'of a' is the link.
(Other definitions for somewhat that I've seen before include "Moderately" , "up to a point" , "To an extent, a little" , "To a moderate extent" , "To some degree, sort of" .)