WP_Query Reverse Sort

  $args = array (
    'cat' => 8, 
    'year' => $year, 
    'orderby' => 'ID',
    'order' => 'ASC', 
    'posts_per_page' => -1, 
    'paged' => $paged, 
    's' => $searchterm 
  );
  $category_posts = new WP_Query($args);

$args = array ( 'cat' => 8, 'year' => $year, 'orderby' => 'ID', 'order' => 'ASC', 'posts_per_page' => -1, 'paged' => $paged, 's' => $searchterm ); $category_posts = new WP_Query($args);