Multiply the list price by the discount percentage, then divide it by 100:
19.99 times 30.00 divided by 100 = 19.99 x 30.00/100 = 19.99 x 0.3 = 6.00 (this is the discount)
Subtract the discount from the price before the discount to get the final price:
Final price = 19.99 minus 6.00 = 19.99 - 6.00 = 13.99
So an item that costs 19.99 when discounted 30% will cost 13.99.
Hope this helps : )
