Elementoffset scroll to the center of the element

[cvalues]

Hi,

`
e.preventDefault();
var target = '.'+$(this).data('target');
var left = $(target).position().left;
var total = $('.front.scroll').width();
var perc = left / (total - $(window).width()) * 100;

    var height = $('html').height();
    var final = ((height - $(window).height())/ 100 * perc);

    $('html, body').animate({scrollTop: final}, 500);

`

Scrolls the selected item to the left corner.
How to scroll to the element center?

var perc = left / (total - ($(window).width()+ $(target).width)/2 ) * 100;

Does not do the trick
BR