Bale's out injured? 100% (8)

I believe the answer is:

absolute

I'm a little stuck... Click here to teach me more about this clue!

'100%' is the definition.
I can't tell whether this defines the answer.

'bale's out injured?' is the wordplay.
'injured?' is an anagram indicator.
'bales'+'out'='balesout'
'balesout' anagrammed gives 'ABSOLUTE'.

Can you help me to learn more?

(Other definitions for absolute that I've seen before include "Peremptory" , "comprehensive?" , "Sheer - unqualified" , "Complete - unlimited" , "Unlimited; not relative" .)

I've seen this clue in The Independent.

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