percentages

Involved Joined: Oct 09, 2006 Posts: 413 Location: UK

Hi, i have 2 figures set with vars, and i want to display the differance as a percentage, for example the price of an item in a store. Here is the code i have:

Code:

// Low//


$al = "50";


// High//


$ah = "100";


$gaina = round(($al / $ah)*100,0);


echo "You will make a maximum" .$gaina. "% profit on this item!!";

The idea is that, if the low price is £50 and the high price is £100. So if you bought it at £50 and sell it at £100, you will make 100% profit.
However the numbers that it outputs are wrong.
Any ideas?

registered · Posted: Sun Oct 19, 2008 12:39 pm

The math isn't correct. You need to determine % of profit. It should be:

(($ah - $al)/$al)*100

Posted: Sun Oct 19, 2008 12:57 pm

I thought that i had got the calculations wrong
cheers Montego