Word. Page numbering and section breaks
I figured it out by 
1) double clicking in the footer
2) going to the design tab that pops up
3) in the header and footer section of that tab clicking on the page number style that looks like the one that was showing up everywhere else in the document.

I did this and the number was correct because it was already linked to previous page. 

FYI, if you don't know what style page number you have going on throughout the rest of your doc, you can't copy/paste the format of a page number you have on another page. Tried it, failed, worked around it.