In some cases, inside the Grid table, the tfoot element is rendered before the tbody element. This causes some readers to read the footer before the body. 

A possible workaround is moving the tfoot after the tbody in the OnGridCreated event:

<script>
function OnGridCreated(sender, args) {
    var $ = $telerik.$;
    $('tfoot').each(function (index, item) {
        var $item = $(item);
        var $next = $item.next();
        if ($next[0]) {
            if ($next[0].tagName.toLowerCase() == "tbody") {
                 $item.insertAfter($next);
            }
        }
    });
}
</script>

 
A forum discussion on the topic: 
Any way to change the order in which RadGrid renders THEAD, TBODY, and TFOOT?