Hello @Stuart,
Thank You for posting the query onto the forum.
Few days back one of our members also had the posted same type of query onto the forum.
Unfortunately, as of now there’s no solution in Power BI to switch your axis or chart labels in “0.00” format and the “0.00%” format at the same time. And this is because when we apply “0.00%” format it converts the numbers into a text.
I’m also providing a link of a query which was posted and the solution I’d provided to our member.
Hoping you find this useful.
Thanks & Warm Regards,
Harsh