Mine

<?php

require_once('connect.php');




//individual lab totals
  $result=mysql_query("select * FROM inventory ORDER BY lab_order")or die(mysql_error());
  $number_returned = mysql_num_rows($result);
  $width_of_rows = (90/$number_returned);
  
  $spacer=7/$number_returned;
  

  
  
  echo '<div style="width:150px; height:150px; border:2px solid #999; background:#e0dad8;">';
    while ($row = mysql_fetch_object($result))
    {
      $percentage_paper = ($row->ink/$row->total_possible_ink)*100;
      //$percentage_paper=1;
      $percentage_paper_margin = 100-$percentage_paper;
      echo '<div style="margin-bottom:0%; background:#3eb33c; margin-top:'.$percentage_paper_margin.'%; margin-left:'.$spacer.'; margin-right:'.$spacer.'; float:left; width:'.$width_of_rows.'%; height:'.$percentage_paper.'%;"></div>';
    }
  echo '</div>';