Multiple conditions

I want to create a conditional custom in Power Query:

I have given the sample data and expected output:

Month (text)    Emp id        Segment         Segment Transfer(Expected Output)
2023 01              Ab             Sales                 0
 2023 12             Ab              Sales                 0

2023 01              AC             Sales               -1

2023 02            Ac             Marketing          1

For example:

If Month = 2023 01 , emp id = abc and segment = "sales" compare this all the other months data if segment for the respective emp id changes look at the previous month for example if it changes at 5 th month the 4th month of the emp  id should be "-1" and 5 th month should be "1" if no changes "0". The "-1","0","1" should be the Segment Transfer column i need to create.

HELP ME out for this one if someone knows it!