Luddite refers to a person. Not sure if there's an adjectival form of it or a noun form that describes the mindset of a Luddite. Misoneism cover it, but Luddite refers to technology change and not to change in general. Conservative (ism) is a more neutral word, I think, to describe one who resists change, but without the underlying premise that the change is necessarily good.

(Of course political baggage might make it a pejorative in some circles in the same way that liberal or progressive might be pejorative in others.)