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They are the same. Example: If something costs 100$ and you found a coupon to get a 15% discount you will save: 15$ and your cost will be 100$-15$=85$ Hope this helped! Have a great day!
15percent discount means they put the price lower by 15percent and 15percent decrease is also low down the price by 15percent..doesn't that make both means lower the price by 15 percent..