Another way to think about it: for every 100 units in 10, you take 24. That adds up to 2.4.
If your restaurant bill comes to $10, a 24% tip would be $2.4, making your total $12.4. On a 24% off sale, an item originally priced at $10 would be discounted by $2.4, bringing the price to $7.6.
Whether you are calculating a discount, a tax, a tip, or a commission, the math is always the same: multiply 10 by 0.24.