Quandaries
and Queries 

Using the calculation on your website,
if I sell something for $885 and my cost
is $296, I make $589 profit. How do I calculate the profit percent
I made on that transaction? Also, how do I calculate
the "mark up" percentage from cost($296)
to sell($855)? Thank you,
and looking forward to your answers. 

Hi Nick, From the way you ask the question I think that you understand what the problem is. We quite often say percent without saying percent of what. You certainly can express the profit of $589 as a percentage of what it cost you
or as a percentage of what you sold it for
If you said to me "My profit on this item was xx%"I would probably think that you meant xx% of what it cost you, but you might be thinking "I just sold that item to you for $855 and 69% of that amount is my profit." It's the sloppy way we use the language that is the problem. For markup you added $589 to the $296 it cost you, so the markup is $589. You then have
The missing number is ^{589}/_{296} 100 = 199% so the markup is 199% of what it cost you. For your expression
the missing number is ^{296}/_{855} 100 = 35%, so your cost is 35% of the selling price. This is probably not the definitive answer you were looking for but the language of percent is confusing at times. Penny 

