60/366 = ≈16.39%
Rounded to 2 decimal places.
The fraction 60/366 could represent 60 days out of a leap year, such as the number of days spent on a project, vacation, or school break. That works out to about 16.39%, so it describes a noticeable but fairly small part of the year.
To picture it quickly, think of 366 days divided into six roughly equal parts. Sixty days is just under one-sixth, or a little more than two months, which makes the percentage easy to estimate as around 16% or 17%.
A common point of confusion is treating the denominator as 365 instead of 366. Since 366 represents a leap year, using the wrong total changes the percentage slightly, even though the difference is small.