Buyer lied in feedback

Recently sold a card for $650. Buyer gave me a negative feedback and lied saying I sold it for 2-3x market price. Prior to buying, I showed them the most recent sold was for $800 from a few months prior. Is this the kind of feedback I can get removed, or do I just respond to their feedback? I'm a very small seller, so that knocked me from 100 percent to 95. Buyer had zero feedback and had just opened their account within a couple days before buying