How to show Percentage sign in pie chart using daniel gindi/Chart library in swift(IOS Chart)
<p>I am using the Charts framework (by Daniel gindi). It was working fine but 
how to show % (sign) on piechart? <br>
I am also try use NSNumberFormatter() method for covert data value in percantage but not get % sign.<br>
I am upload code here</p>

<pre><code>    @IBOutlet var pieChart: PieChartView!
    override func viewDidLoad() {
            super.viewDidLoad()
            var data = [25.0,37.5,12.5,12.5,12.5] // pie chart data 
            var status = ["A","B","C","D","E"] // status
            setChart(status, values: data)
            self.pieChart.drawSliceTextEnabled = false

    }
    func setChart(dataPoints: [String], values: [Double]) {

            pieChart.noDataText = "you need to provide data for chart"
            pieChart.noDataTextDescription = ""
            self.pieChart.descriptionText = ""

            var dataEntries: [ChartDataEntry] = []
            //pieChart.centerText = " "
            for i in 0..&lt;dataPoints.count {

                let dataEntry = ChartDataEntry(value: values[i], xIndex: i)
                dataEntries.append(dataEntry)

            }

            let pieChartDataSet = PieChartDataSet(yVals: dataEntries, label: "")

            var colors: [UIColor] = []


            for _ in 0..&lt;dataPoints.count {
                let red = Double(arc4random_uniform(256))
                let green = Double(arc4random_uniform(256))
                let blue = Double(arc4random_uniform(256))

                let color = UIColor(red: CGFloat(red/255), green: CGFloat(green/255), blue: CGFloat(blue/255), alpha: 1)
                colors.append(color)

                pieChartDataSet.colors = colors

            }

            let pieChartData = PieChartData(xVals: dataPoints, dataSet: pieChartDataSet)

            pieChart.data = pieChartData
            pieChart.animate(yAxisDuration: 2.0, easingOption: .EaseInOutBack)
}
</code></pre>

<hr>

<h1><strong>Output:=></strong></h1>

<p><a href="https://i.stack.imgur.com/LCGzu.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LCGzu.png" alt="enter image description here"></a></p>