Incorrect % for C major in popular keys infographic

On Infographics by Hooktheory, the infographic for The Most Popular Major Keys begins with a very tall red bar marked with 10% for C major. It should be 16%, assuming that the other percentages are correct. Making it 16% would seem to be in line with its relative height compared to the 10% bar that is A major. Here is the direct link to the infographic: