Numbers and dates
We follow the Chicago Manual of Style here. The IT Communications Office (ITCO) says it best:
Number formatting: Zero through nine, 10 and up.
Date formatting: July 1 (add the year if date is more than one year prior/after)
See ITCO’s style guide for more information.
Use the percent sign (%) in these circumstances:
- Tables and in technical or scientific writing. For example: 60% of participants reported experiencing negative side effects.
- Headings and subheadings. For example: Candidate Woof takes 7% lead in the election for best dog.
- Interface labels
- Captions and infographics
The percent sign in these cases improves content’s scannability. Otherwise, spell out percent in body copy.
On this page