Percentage Off vs. Dollar Off: Which Deal Is Actually Better
Which deal saves more depends entirely on the item's price relative to the two offers — converting the percentage discount to its actual dollar value at that specific price (or the dollar discount to its equivalent percentage) makes the two directly comparable, rather than comparing a percentage and a dollar figure as if they were already the same kind of number.
"20% off" and "$15 off" can't be compared directly without first converting one into the same terms as the other — for a specific item's price, one calculation makes the better deal obvious.
A worked comparison
A $60 item with a choice between 20% off ($12 off, final price $48) or a flat $15 off (final price $45): the flat $15 discount is actually the better deal here, despite 20% sounding like the larger number at first glance, because 20% of $60 is only $12 — less than the flat $15 offer.
Why the item's price flips which offer wins
At a higher price, the same 20% discount becomes worth more in dollar terms — on a $100 item, 20% off is $20, which would then beat a flat $15 discount. There's a specific price point (here, $75, where 20% equals exactly $15) where the two offers are worth exactly the same, and above or below that point, one clearly wins.
A quick way to compare without a calculator
Estimating what the percentage discount is worth in dollars at the item's actual price (even roughly) and comparing that estimate directly against the flat dollar offer gives a fast, reasonably reliable read on which deal is genuinely better for that specific purchase.