PercentFormatter Class

var percentFormatter = new Windows.Globalization.NumberFormatting.PercentFormatter(iIterable(String));
var percentFormatter = new Windows.Globalization.NumberFormatting.PercentFormatter();

// This scenario uses the Windows.Globalization.NumberFormatting.PercentFormatter and
// the Windows.Globalization.NumberFormatting.PermilleFormatter classes to format numbers
// as a percent or a permille.

// Create formatters initialized using the current user's preference settings.
var percentFormat = new Windows.Globalization.NumberFormatting.PercentFormatter();
var permilleFormat = new Windows.Globalization.NumberFormatting.PermilleFormatter();

// Make a random number.
var randomNumber = Math.random();

// Format with current user preferences.
var percent = percentFormat.format(randomNumber);
var permille = permilleFormat.format(randomNumber);

// Get a fixed number.
var fixedNumber = 500;

// Format with grouping using default.
var percentFormat1 = new Windows.Globalization.NumberFormatting.PercentFormatter();
percentFormat1.isGrouped = true;
var percent1 = percentFormat1.format(fixedNumber);

// Format with grouping using French.
var percentFormatFR = new Windows.Globalization.NumberFormatting.PercentFormatter(["fr-FR"], "FR");
percentFormatFR.isGrouped = true;
var percentFR = percentFormatFR.format(fixedNumber);

// Format with no fractional digits using default.
var percentFormat2 = new Windows.Globalization.NumberFormatting.PercentFormatter();
percentFormat2.fractionDigits = 0;
var percent2 = percentFormat2.format(fixedNumber);

// Format always with a decimal point.
var percentFormat3 = new Windows.Globalization.NumberFormatting.PercentFormatter();
percentFormat3.isDecimalPointAlwaysDisplayed = true;
percentFormat3.fractionDigits = 0;
var percent3 = percentFormat3.format(fixedNumber);

// Display the results.
var results = "Random number (" + randomNumber + ")\n" +
              "Percent formatted: " + percent + "\n" +
              "Permille formatted: " + permille + "\n\n" +
              "Fixed number (" + fixedNumber + ")\n" +
              "Percent formatted (grouped): " + percent1 + "\n" +
              "Percent formatted (grouped as fr-FR): " + percentFR + "\n" +
              "Percent formatted (no fractional digits): " + percent2 + "\n" +
              "Percent formatted (always with a decimal point): " + percent3;