Step 1: Start with the fraction 42/9.

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

42 ÷ 9 = 4.6667

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

4.6667 × 100 = 466.67%

Final Answer: 42/9 as a percentage is 466.67%.