Edit in JSFiddle

FusionCharts.ready(function() {

  var a = ['Players standing {br} around between plays', 'Commercials', 'Replays', 'Gameplay', 'Coach Shots', 'Referee Shots', 'Halftime', 'Sideline player shots', 'On-screen promotions', 'Other'];
  var b = [35.5, 24.5, 10.7, 8.3, 4.9, 3.2, 3.2, 2.2, 2, 5.5];

  var t = _.object(a, b);
  console.log(t);

  var maindata = [];


  for (var i = 0; i < a.length; i++) {
    var k = new Object();
    k.label = a[i];
    k.value = b[i];
    maindata.push(k);

  }
  //console.log(maindata);

  var sortedmaindata = _.sortBy(maindata, 'value').reverse();
  console.log(sortedmaindata);

  var scoreCard = new FusionCharts({
      type: 'bar2d',
      renderAt: 'chart-container',
      width: '100%',
      height: '400',
      dataFormat: 'json',
      dataSource: {
        "chart": {
          "caption": "What actually happens in an NFL game",
          "captionAlignment": "left",
          "subcaption": "An NFL broadcast, minute by minute",
          "subCaptionFontSize": "13",
          "paletteColors": "#0075C2",
          "placeValuesInside": "0",
          "exportEnabled": "1",
          "theme": "hulk-light",
          "valuefontcolor": "#0000000",
          "yaxisminvalue": "0",
          "yaxismaxvalue": "40",
          "divlinealpha": "0",
          "showAlternateVGridColor": "0",
          "showYAxisValues": "1",
          "showPlotBorder": "0",
					
          "showYAxisLine": "1",
          "yAxisLineColor":"#000000",
          "numbersuffix": "%",
          "useRoundEdges": "1",
          "showLabels": "1"

        },
        "data": sortedmaindata,


      }

    })
    .render();
});

<h3><font face="Roboto">
Creating Charts using Underscore JS
</font>
</h3>
<div id="chart-container">
  FusionCharts will render here...
</div>