I am trying to find out the discount amount of a price.
The cost of item WAS £50.00 Sale Price £25.00 Discount = %50
However when use this formula below in PHP it doesnt give me the correct Discount percentage.
$percent = $rowx->Orgprice - $rowx->SalePrice / 100;
$percent = 50 - 25 / 100 = 49.75;
$percent = 50 - 20 / 100 = 49.8;
All above percentages are wrong.
Use this formula for calculating the discount percentage :
Discount%=(Original Price - Sale price)/Original price*100
Translating it into code, it should be something like :
$percent = (($rowx->Orgprice - $rowx->SalePrice)*100) /$rowx->Orgprice ;
selling price = actual price - (actual price * (discount / 100))
So for example if (actual price) = $15, (discount) = 5%
selling price = 15 - (15 * (5 / 100)) = $14.25
The correct formula is 1 - (sale price / original) * 100, so:
$percent = 1 - ($rowx->SalePrice / $rowx->Orgprice) * 100;
$percent = 1 - (25 / 50) * 100 = 50