28/66 as a percentage is 42.42%. This rounded figure tells you how much of a whole 28 parts out of 66 represent when expressed in percent form.
The fraction 28/66 can be simplified to 14/33, which still represents the same portion of a whole. Whether you keep it as a fraction or use the percentage, the value stays consistent.
Knowing the percentage is handy for quick comparisons. For example, if you see a chart showing 42.42%, you instantly recognize it matches the portion that 28 out of 66 would give you.
