JavaScript Intl.NumberFormat porcentagem

var discount = 0.251;

var option = {
   style: 'percent',
   minimumFractionDigits: 2,
   maximumFractionDigits: 2
};
var formatter = new Intl.NumberFormat("en-US",option);
var discountFormat = formatter.format(discount );
console.log(discountFormat);
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