Step 1: Start with the fraction 100/31.

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

100 ÷ 31 = 3.2258

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

3.2258 × 100 = 322.58%

Final Answer: 100/31 as a percentage is 322.58%.