21/27 as a percentage is 77.78%. This value is rounded to two decimal places, giving a clear and easy‑to‑read figure for everyday use.
The fraction 21/27 can be simplified to 7/9, which still represents the same part of a whole. Both forms show that the portion is a little less than four‑fifths, or about three‑quarters.
In practical terms, if you had a chocolate bar divided into 27 equal pieces and ate 21 of them, you would have enjoyed roughly 77.78% of the bar. The same idea works for any situation where you need to compare a part to the whole.
Remember, whenever you see a fraction like 21/27, you can think of it as about three‑quarters of the total, or simply use the percentage 77.78% for quick reference.
