title: Replace symbol "%" with word "Percent"
body: <p>How to replace symbol "%" with a word "Percent".</p>
  
  <p>My original string is "Internal (%) External (%)".
  The string should be "Internal (Percent) External (Percent)"</p>
  
  <p>Using regular expression, how I can replace this symbol?</p>
  
  <p>Thanks in advance.
  Atul</p>