Greetings!
If the normal price is $824, that is 100% of the price.
If it is decreased by 20% then that means it is 80% of the price.
If you multiply the amount by the percentage formula:
[tex](\frac{percentage}{100})[/tex]
You get the price you aim for! In this case it would be:
824 x [tex](\frac{80}{100})[/tex] = 659.2
So your answer would be $659.20!
Hope this helps.
