6/8 as a percentage is 75.00%. This is the simplest way to see how the fraction translates into a familiar form.
The fraction 6/8 can also be reduced to 3/4, which still represents the same part of a whole. Whether you write it as 3/4 or 6/8, the value stays the same.
In everyday situations, thinking in percentages helps you compare sizes quickly. Seeing 75.00% tells you that three‑quarters of something is being considered.
If you need to communicate this to others, just state the percentage and they’ll understand the proportion right away.