12/84 = ≈14.29%
Rounded to 2 decimal places.
A share of 14.29% might describe how many students in a class chose a certain lunch, or how many items in a shipment arrived late. It gives a quick sense that the group is a small but noticeable part of the whole.
To picture it quickly, think of about one out of every seven items. That’s close enough for a rough estimate, even though the exact share is a little different.
A common mix-up is reversing the numbers and treating the 84 as the part instead of the whole. Also, 14.29% is a rounded value, so it may not be exact.