Percentage Data Problem

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## What did you do?

ℹ I want to show the percentage Label on my PieChart.
This is my code
let formatter = NumberFormatter()
formatter.numberStyle = .percent
formatter.maximumFractionDigits = 1
formatter.multiplier = 1
formatter.percentSymbol = " %"
let bvform = DefaultValueFormatter(formatter: formatter)
dataset.setValueFormatter(bvform)
in the version 3.6.0 worked in right way.

## What did you expect to happen?

ℹ with this array in input [1505, 208] I would show 87,8% and 12,2%

## What happened instead?

ℹ I show this value in the piechart = 87.85755983654407 and 12.142440163455925

## Charts Environment

**Charts version/Branch/Commit Number:** 4.0.1
**Xcode version:** 12.4
**Swift version:** 5.3
**Platform(s) running Charts:** iOS
**macOS version running Xcode:** 11.2.1