I've searched for this but can't seem to find the exact answer.
As an example, I have cells a2:a100 with information on departments, finance dept, marketing, sales, etc.
I'll be listing all departments, past and present, say from cell b2 onwards.
In cell c2, I want there to be a formula to check if the department I put in cell b2 is in the range of a2:a100, and yes or no to be the answer to whichever it is.
Any help appreciated.