This is not something that is OOB available. The question is: what is your usecase. You would need to create custom functionality. What will it bring you? Why is it important to know if something was part of a bulk update or not? Who wants to know this?

Do realize that bulk updates can be done in multiple ways: update all, update selected, via flow, via script, etc. It could make sense, but without knowing the why behind your requirement, I'm not seeing it. 

With every development the main question should be: does the result pay for the effort.