80/102 = ≈78.43%
Rounded to 2 decimal places.
A value like 80/102, or about 78.43%, could describe a survey where roughly 80 out of 102 people choose the same answer. It might also represent a student answering 80 questions correctly out of 102 or a device working properly during about four-fifths of its tests.
To picture it quickly, imagine a group of 100 items with about 78 of them shaded or marked. It is a little less than 80%, so you can estimate it as close to four out of every five.
A common mistake is treating 80/102 as exactly 80%, since the numerator is 80. The denominator is slightly larger than 100, so the actual percentage is a bit lower than 80%.