At the outset of attempting to make a career change from one stream to another, one should be clear about the new challenge ahead. If you are interested in switching jobs from Marketing to Human Resources, you should provide additional elaboration on how your experience can make you a strong candidate for a position in HR.
Be Strategic in Your Approach
For instance, instead of saying, "I'd love to put my learning and contribute as much to Human Resources," consider a more compelling statement than simply stating, "Since I have an MBA in HR and Marketing, I am seeking a job in HR." Which one sounds more appealing?
Keep your explanation concise, especially if you are entering entry-level positions as a fresher. If you aspire to progress and succeed in a significant way, be prepared to start from the ground up.
It will not have an impact unless you frequently switch jobs from HR to other fields and then to something else. I hope this provides you with some insight.
All the best...!