Step 1: Start with the fraction 18/9.

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

18 ÷ 9 = 2.0

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

2.0 × 100 = 200.0%

Final Answer: 18/9 as a percentage is 200.0%.