330/600 = 55%
The fraction 330/600 represents 55%, a little more than half. You might see a value like this when 330 out of 600 students complete a survey, 330 of 600 seats are filled, or 330 items out of a shipment of 600 arrive on time.
To picture it quickly, imagine a group split into two equal halves, with 300 in each half. Since 330 is 30 more than half of 600, the amount is slightly above the halfway point.
A common mistake is treating 55% as if it were close to 50% without noticing the extra 5 percentage points. It is also important to remember that 55% describes the portion selected out of the whole 600, not simply the number 330 by itself.