To find out what 17 out of 20 is as a percentage, you can follow these simple steps:
1. **Divide 17 by 20**: This will give you the decimal form of the fraction.
\[ 17 \div 20 = 0.85 \]
2. **Multiply the result by 100**: This converts the decimal to a percentage.
\[ 0.85 \times 100 = 85\% \]
So, 17 out of 20 is equal to **85%**. This means that if you have 20 items, 17 of them represent 85% of the total.