What is the formula for percent discount?

Answer 1

take the % off amount and put a decimal at the end

ex: 10% is 10.

Move the decimal to the left twice

ex: 10% becomes .10 or 50% becomes .50 and so on.

take that and multiply by the original amount.

ex: origionally amount of a shirt is $24.99 and it's on sale 50% off so multiply 24.99x.50= 12.495 if it's 10% multiply 24.99x.10=2.499

next round up the number you got when you multiplied

ex: 12.495=12.50 and 2.499=2.50

then take the original amount and subtract the number you got for multiplying the original amount by the decimal amount.

ex: 24.99-12.50=12.49 (the final answer is how much the shirt would cost at 50% off) and 25.99-2.50=22.49(the final answer is how much the shirt would cost at 10% off)