You need to sort in descending order so the last 5 posts will be on top. Just add 'order' => 'DESC'
to your args.
$args = Array(
'post_type' => 'post',
'posts_per_page' => '5',
'meta_key' => 'views',
'orderby' => 'meta_value_num',
'order' => 'DESC'
);