5/99 = ≈5.05%
Rounded to 2 decimal places.
A value like 5.05% might describe a small share of people in a survey who choose a particular answer, or a few items in a large batch that have a defect. It’s a little more than five out of every hundred.
For a quick picture, think of about 1 person out of every 20. That’s close to 5%, so it gives you a useful estimate without needing to be exact.
One common mix-up is reading 5.05% as 5.05 out of 1, rather than 5.05 out of 100. The percent sign means the amount is a small part of a whole, not more than five whole units.