Demo

First Name Last Name Age Total Discount Diff
Peter Parker 28 9.99 20.3% +3.0
John Hood 33 19.99 25.1% -7
Clark Kent 18 15.89 44.2% -15
Bruce Almighty 45 153.19 44% +19
Bruce Evans 56 153.19 23% +9

Javascript

$(document).ready(function() {
	// call the tablesorter plugin
	$("table").tablesorter();
});

HTML

<table cellspacing="1" class="tablesorter">			
	<thead>>
		<tr>
			<th>first name</th>
			<th>last name</th>
			<th>age</th>
			<th>total</th>
			<th>discount</th>
			<th>diff</th>
		</tr>
	</thead>
	<tbody>
		<tr>
			<td>peter</td>
			<td>parker</td>
			<td>28</td>
			<td>9.99</td>
			<td>20.3%</td>
			<td>+3.0</td>
		</tr>
		<tr>
			<td>john</td>
			<td>hood</td>
			<td>33</td>
			<td>19.99</td>
			<td>25.1%</td>
			<td>-7</td>
		</tr>
		<tr>
			<td>clark</td>
			<td>kent</td>
			<td>18</td>
			<td>15.89</td>
			<td>44.2%</td>
			<td>-15</td>
		</tr>
		<tr>
			<td>bruce</td>
			<td>almighty</td>
			<td>45</td>
			<td>153.19</td>
			<td>44%</td>
			<td>+19</td>
		</tr>
		<tr>
			<td>bruce</td>
			<td>evans</td>
			<td>56</td>
			<td>153.19</td>
			<td>23%</td>
			<td>+9</td>
		</tr>
	</tbody>
</table>