var output_fc = ee.FeatureCollection(leng.map(function(x){
    var dict = {class_name: to.get(x), class_area: class_areas_results.get(x), tree_cover_loss_area: tcl_results.get(x), tree_cover_gain_area: tc_gain_results.get(x),
    avg_tree_area: avg_tree_area_results.get(x), tcd_00: tcd_00_results.get(x), tcd_10: tcd_10_results.get(x)};
    var feature = ee.Feature(null, dict);
    return feature;
  }));

  var download = (ui.Label('Download').setUrl((ee.FeatureCollection(output_fc).getDownloadURL({
    format: 'CSV',
    filename: 'changeAreas'
  }))))

  panel.add(download)

  print(output_fc)