title: .setNumberFormat is not working in Google Apps Script
body: <p>I have the following code in my Google Apps Script which gets data from my Google Spreadsheet, and row 15 (the last row) returns an error saying <code>TypeError: percent1.setNumberFormats is not a function (line 15, file &quot;Code&quot;)</code>. What should I change to fix this?</p>
  <p>What I want to do is, I want to display <code>dod1</code> in a percentage format like <code>0.00%</code></p>
  <pre><code>function notifySlack(message) {
  
    var url = 'https://docs.google.com/spreadsheets/d/xxxxxxxxxxxxxxxxxxxxxx/edit#gid=xxxxxxxxx';
    var spreadSheet = SpreadsheetApp.openByUrl(url);
    var allSheets = spreadSheet.getSheets();
    var theSheet = allSheets[1];
    var lastRow = theSheet.getLastRow();
    var lastColumn = theSheet.getLastColumn();
    var sheetData = theSheet.getSheetValues(1, 1, lastRow, lastColumn);
    
    var ymd = Utilities.formatDate(sheetData[44][0], 'Asia/Tokyo', 'yyyy-MM-dd');
    
    var data1 = sheetData[44][1];
    var percent1 = sheetData[44][1] / sheetData[43][1];
    var dod1 = percent1.setNumberFormat('0.00%');
  }
  </code></pre>