How to Specify which Field was updated

How to Specify which Field was updated

Hi,
I want to see which field was changed and what was the change, kind of like - field was changed from "4500$" to "6500$"
I have made a workflow that sends email notifications when a field is changed in one of the modules, 
i don't want to create an email template for each and every field and connect it to the trigger (specify field) 
there must be a better way