If it’s something you do a lot, I personally use “Bulk Rename Utility”. Real helpful with doing a bunch of renames and other related tasks for files. It makes editing, like it says on the box, bulk renaming a breeze. You’d have to play around with it a little to get a better handle on some of the more useful features. Don’t know if I’ll get dinged for mentioning a 3rd party application or if I were to link it, but I’ll play it safer by not linking.
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Note: As with any files on the internet, it’s your responsibility to make sure the file(s) are safe to use.