Step 1: Start with the fraction 31/12.

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

31 ÷ 12 = 2.5833

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

2.5833 × 100 = 258.33%

Final Answer: 31/12 as a percentage is 258.33%.