title: How to match multiple characters in a regular expression?
body: <p>I have the string</p>
  
  <pre><code>7,456.23%
  </code></pre>
  
  <p>where I would like to use a regular expression to match BOTH the comma(,) and percent(%) characters and remove them so the result is</p>
  
  <pre><code>7456.23
  </code></pre>
  
  <p>I can figure out how to match one character or the other, but not both.</p>