Extreme Pro format problem


My Extreme Pro SDXC64GB has been formatted at 27.4 GB, which must be the formatted amount of a 32GB card.

Is there anyway I can regain its full capacity?

It was formatted in a Sony DSC-HX200V camera.

Then in an XP computer with the exFAT download applied, it only showed the capacity of the card at 27.4 GB before formatting.