Compare Sheets and Display the previous sheets column in current sheets

I have attached 02 excel sheets, 1 sheet name is original another sheet name is working, now i want to workout in working sheet. In working sheet birth year col. is blank, in original sheets birth sheets is filled now I need to compare both sheets and bring in working sheet output birth year column need to fill from comparing of original sheets. I think lookup command is used for this. But i don't know how to do easily ? So may i request you to please provide me the clear solution.

Kindly note both sheet common col. is borrower id.