73/91 as a percentage is 80.22%. This value is already rounded to two decimal places, so you can use it directly in reports or calculations.
The fraction 73/91 is already in its simplest form because 73 and 91 share no common divisor other than 1. That means the fraction represents an exact portion of a whole.
You might see this percentage when a survey shows that 73 out of 91 respondents prefer a certain option. It tells you that about eight‑tenths of the group chose that answer.
Because the number is rounded, the true value is very close to 80.22%, but for most everyday purposes the rounded figure is sufficient.