44/86 expressed as a percentage is 51.16%. This is the rounded value you get when you turn the fraction into a percent with two decimal places.
The fraction 44/86 can also be simplified to 22/43, which shows the same size but with smaller numbers. Whether you write it as a fraction or a percent, it represents just over half of a whole.
In everyday situations, you might see 51.16% used to compare parts of a group, such as a survey result or a test score. The rounding makes it easy to read while still staying accurate enough for most purposes.