How to show Percentage sign in pie chart using daniel gindi/Chart library in swift(IOS Chart)

Question

I am using the Charts framework (by Daniel gindi). It was working fine but how to show % (sign) on piechart?
I am also try use NSNumberFormatter() method for covert data v

Answer 1

    let formatter = NumberFormatter()
    formatter.numberStyle = .percent
    formatter.maximumFractionDigits = 1
    formatter.multiplier = 1.0
    chart.data?.setValueFormatter(formatter as? IValueFormatter)