Step 1: Start with the fraction 3/9.

Step 2: To convert a fraction into a percentage, divide the numerator by the denominator.

3 ÷ 9 = 0.3333

Step 3: Multiply the result by 100 to get the percentage.

0.3333 × 100 = 33.33%

Final Answer: 3/9 as a percentage is 33.33%.