Get average/ratio

[The Little Guy]

I can't remember the math to do this, but I use MySQL to calculate an average:

 

5 = 100%

0 = 0%

 

I want to make a bar that shows an average (like a bar graph)

 

so lets say I get 2.5 as one of my returned results, that means the bar should only be 50% long of the maximum width.

 

Using calculations, how can I get the number 50 (the max width is 100% of a table cell)?

[.josh]

$result * 20

[jcbones]

$used = 2.5;
$total = 5;
$percent = number_format(($used * 100) / $total);

echo $percent;

[The Little Guy]

sweet! that seems to work!

 

Thanks