title: How is fmt:formatNumber tag used?
body: <p>I am trying to format a percentage to 2 decimal places and the code (below) I am using is not working:</p>
  
  <pre><code>&lt;form:input 
       class="calculator-percentage-input"
       value="&lt;fmt:formatNumber value='${percentage}' maxFractionDigits='2' /&gt;"
       path="discount" cssErrorClass="error"
  /&gt;
  </code></pre>
  
  <p>The value displayed in my input box is (percentage is empty):</p>
  
  <pre><code>&lt;form:input 
       class="calculator-percentage-input"
       value="" 
       path="discount" cssErrorClass="error"
  /&gt;
  </code></pre>
  
  <p>Can anyone tell me how to just display the value of <code>percentage</code>?</p>