Round Pagetotal Footer callback

conedie

Hello friends.
I write a table with footer callback where I have a series of decimal numbers that add up to 100, adding the total to each one gives me 100.00000003, I would like to be able to round this number so that it does not appear that long, and tried with Math. round, but I could not, I would like to know if any of you could help me I would be very grateful, I am using the following code.

footerCallback: function ( row, data, start, end, display ) {
var api = this.api();
// Remove the formatting to get integer data for summation
var intVal = function ( i ) {

            return typeof i === 'string' ?
                i.replace(/[\%,]/g, '')*1 :
                typeof i === 'number' ?
                    i : 0;     
        };

        // Total over all pages

            if (api.column(6).data().length){
            var total = api
            .column(6)
            .data()
            .reduce( function (a, b) {
            return intVal(a) + intVal(b);
            } ) }
            else{ total = 0};


        // Total over this page

        if (api.column(6).data().length){
        var pageTotal = api
            .column( 6, { page: 'current'} )
            .data()
            .reduce( function (a, b) {
                return intVal(a) + intVal(b);
            } ) }
            else{ pageTotal = 0};
         $( api.column( 6 ).footer() ).html(
            pageTotal +' % '
        );
    }