Moving wordpress from root to public html

OK so I installed wordpress in the root directory instead of intalling it in the public html directory. The current url is https://www.blog.propixelphotography.com but I want it to be https://www.propixelphotography.com/blog which would be in the public html.
Now, how do I transfer everything to the blog folder in the public html? If I do a copy/paste it will give me a 404 because everything is still pointing to https://www.blog.propixelphotography.com instead of https://www.propixelphotography.com/blog

Any help would be greatly appreaciated.

Thanks.