title: Angular 5 percent pipe digitInfo not working as expected
body: <p>If I do this in an Angular 5 template:</p>
  
  <pre><code>{{0.7 | percent:'1.2-5'}}
  </code></pre>
  
  <p>I get this as expected: <code>70.00%</code></p>
  
  <p>However, when I do this:</p>
  
  <pre><code>{{0.07 | percent:'1.2-5'}}
  </code></pre>
  
  <p>I get <code>7.00000%</code> instead of what the expected <code>7.00%</code></p>
  
  <p>Am I just doing something wrong or is this a bug in Angular?</p>