1/80 = 1.25%
A value like 1.25% can show up when a small share of something is being described, such as 1 out of 80 items in a batch having a particular feature. It’s a small amount, but it can still matter when the group is large.
To picture 1/80 quickly, imagine 80 dots with just one colored in. In a group of about 80 people, it’s roughly one person.
A common mix-up is treating 1.25% as if it were 1.25, which is much larger. The percent sign means the amount is only a small part of the whole.