Hi,
I have a difficulties with making ranking difference with previous YTD. I can get the rank of the current time be table. But what I want is that how many rank the specific brand is increase, decrease or equal compare to selective previous YTD. For example, now is May 2021 then compare YTD of 2021 May and YTD of 2020 May.
I want like as followed.
Currently what I have.
What could be a logic? Thanks in advanced.