Nearly 1 million people (.3%) identify as transgender in the United States (US), and transgender people made up 2% (671) of new HIV diagnoses in the US and dependent areas in 2019

Source CDC

https://www.cdc.gov/hiv/data-research/facts-stats/transgender-people.html

2% / 0.3% = 6.66... or six and two thirds

People who identify as transgender are approximately 6.66 more times likely to get a new HIV diagnosis as people who do not identify as transgender

This way to calculate does not always work but should work approximately in this case