Copy formula pattern to other cells

Hi,
I am looking to see if it is possible to for excel to pick up patterns in a formula to drag or paste. (Not the same formula, such as adding 1)
I have a grid 180 X 180 (180 possible number of times absent x 180 school days) we are trying to get the percentage of time not absent for a given day. We have to do it 1 day at a time per the way the state wants it. This would be a quick reference chart. Hopefully my picture attaches so you can see what I mean.
Column C has these formulas:
=(C2-B3)/C2
=(C2-B4)/C2
=(C2-B5)/C2

*Is it not possible to replicate this type of thing to continue down the column? or across a row? I've tried and it does not give me the correct results.....Hoping someone can help. It is too much to go and do through the whole sheet. We did also make a simple calculator to type in # of days/days of school and it auto figures the percent, BUT they want something like this chart day by day.

Thanks in advance!

excel attendance.png

It looks like you need this formula in your starting cell (C3):

=(C$2-$B3)/C$2

and then you will be able to copy this across and down as required. Note the positioning of the $ symbols, which means that part of the cell references will not change.

Hope this helps.

Pete

Thank you so much! I think I was wording what I was looking for wrong when I was google searching. This seems to work, so I'm going to finish up the sheet.
Thanks for saving me a bunch of time!
Michelle

Glad to help.

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Pete