3/390 = ≈0.77%
Rounded to 2 decimal places.
A fraction like 3/390 can describe a very small share of a larger group, such as 3 defective items in a shipment of 390 or 3 rainy days during a long testing period. That is about 0.77%, so it represents a rare event rather than something that happens regularly.
To picture it quickly, imagine 390 people standing in a crowd with only 3 selected. You can also estimate it as roughly 1 out of every 130, which makes clear that the amount is well below 1%.
A common mistake is to treat 0.77% as 0.77, or 77%, because the digits look similar without the percent sign. The percent symbol means “out of 100,” so 0.77% is much smaller than one whole percent.
