Is this your home work or some real scenario?
Of course it matter because it will help me to answer your question, please explain what you require exactly?
What does YTD stands for and on what basis you want to project your sales, please provide me the ddetails not the example which you are doing, so I can try to explain you the way, thanks.
It is not necessary for a person to know each and every abbreviation to become a finance expert, but if you don't want me to help you that is your wish, thanks.
It stands for Year to Date, now happy?