title: Point to a relative other Sheet in Excel
body: <p>I'm trying to find a way to from a Cell get the data from a cell in the Sheet that lies to the Left (down in the tray) of the current Sheet.</p>
  
  <p>I know how to call to other sheets via</p>
  
  <pre><code>=Sheet1!A1
  </code></pre>
  
  <p>But now I need something best explained with</p>
  
  <pre><code>=Sheet[-1]!A1
  </code></pre>
  
  <p>Any ideas?</p>