266/266 = 100%
The fraction 266/266 represents a whole amount, or 100%. You might see a value like this when every student turns in an assignment, every item in an order is delivered, or a device’s battery is fully charged.
To picture it quickly, imagine a pie, progress bar, or group of 266 objects with nothing missing. Since the top and bottom numbers match, you can estimate that the value is complete rather than only part of the whole.
A common mistake is thinking that a large number like 266 must mean a large percentage. The size of the percentage depends on how the two numbers relate, and matching numbers always describe one complete whole.