Format percent column with DataTables

DataTables: Percent.js

jQuery.extend( jQuery.fn.dataTableExt.oSort, {
    "percent-pre": function ( a ) {
        var x = (a == "-") ? 0 : a.replace( /%/, "" );
        return parseFloat( x );
    },
 
    "percent-asc": function ( a, b ) {
        return ((a < b) ? -1 : ((a > b) ? 1 : 0));
    },
 
    "percent-desc": function ( a, b ) {
        return ((a < b) ? 1 : ((a > b) ? -1 : 0));
    }
} );