I had to basically wipe my Mac and reinstall Catalina because I messed up some python package installations very badly, and I was able to erase it seemingly successfully. There's only one primary odd change: my terminal changed its display. It now prompts me: "[lastname]@[firstname]s-MBP ~ %" where [firstname] and [lastname] are my first and last name . (There are some other odd changes as well, like Google seems to take longer to respond, but that may be because of higher internet traffic.) After searching, I haven't found anyone with a similar issue.
Is this a signal that I messed something up while erasing my old system, or is this normal variance across machines? If it is an issue, what might it be, and how might I fix it?
 Following the instructions at https://support.apple.com/en-us/HT201065
 It used to be something more conventional, ending with $.