100 percent (3)
I believe the answer is:
all
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">100 percent</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for all that I've seen before include "Comprising every individual one" , "Total" , "and 18: 'Sing through -- --' (carol)" , "and 16 Across and 23 Across: Even so" , "Avenue, walk or garden path" .)