"I was not quite an adult when I entered college, and perhaps too easily swayed, so I majored in Political Science and International Relations as suggested by my parents. Now I'm an adult who is responsible for and capable of making decisions for myself, so my master's degree is a better representation of my skills and my interests."
You can augment the above with additional information that is provided not in the question.
Why did your parents suggest (or perhaps demand) that you major in that field?
Perhaps one or both of your parents graduated in that field and has been very successful in their professional life. Or perhaps you partied to much while you were in high school and your parents didn't think you would cut it in a technical field where you needed to spend your Friday and Saturday nights catching up on homework and programming assignments. Or lots of other reasons. You need to know why they made that decision for you.
Did you take computer science classes in high school or in college?
I would assume that you did; graduate programs are even more leery of someone making a big jump than are employers. If these classes were what made you want to switch to computer science, say so.
For example, suppose your father majored in that field, and even though he is not a politician, a campaign manager, or a diplomat, he feels that that degree was what led to his success. He gave you a free ride through college (note well: this requires a good amount of financial success in the US), so you felt obliged to major in his chosen field. It wasn't your chosen field, and because you took a few computer science classes on the side, you knew that that was your chosen field. It's not so hard to say that, is it?
Finally, you can turn your undergraduate degree into a big plus rather than a potential minus. You have skills that most of your technically educated cohorts do not have:
- You can read and comprehend written material very quickly.
Good luck with that for most of your technically-educated cohorts; our technical education taught us to read technical materials very carefully and very slowly. There are times when that slow reading is detrimental.
- You can sense the politics in requests for proposals (which are often laden with politics).
As an example, there are some contracts that are not worth pursuing because they are "locked in" for some specific organization that will inevitable win the contract. If your employer is not that one pre-selected organization, it's best to move on to something else.
- You can write coherently (good luck with that for most of your technically-educated cohorts).
There are so very, very many areas in technology where the combined abilities to comprehend the technology and to write well are absolutely critical. Your future employer needs you!
- You are multilingual (also good luck with that for most of your technically-educated cohorts).
Note well: You cannot claim to be multilingual if you satisfied your foreign language requirements with classes in classical Latin and classical Greek.
Full disclosure: I put all three of my children through college in the US. I felt it that doing so was one my key jobs as a parent. This required a certain amount of financial success on my part. I also felt it was my job as a parent to give hints regarding the fields in which they should major. However, I never demanded they follow my hints because each my three children were so very different from one another. Only one of my three children followed my "hints", and that was because my hints did indeed coincide with his skills and interests.
Also full disclosure, I am apparently the first to use the word "poetry" at this site. I majored in hard technical fields (physics and computer science) because that was where my skills and interests almost coincided. I also took classes in biology, poetry, history, English, law, and foreign languages because my interests were more varied than the typically narrow perspective of education in a technical field.
