title: A regex to match a string that is surrounded by %
body: <p>i need a regex to find all string that is surrounded by %</p>
  
  <p>example:</p>
  
  <blockquote>
    <p>A=%Test1% OR B = %Test2% AND (C=%Test3
    OR C = %Test4)</p>
  </blockquote>
  
  <p>what i need are the strings:</p>
  
  <blockquote>
    <p>%Test1%, %Test2%, %Test3% and %Test4%</p>
  </blockquote>
  
  <p>thanks.</p>