Step 1: Start with the fraction 30/7.

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

30 ÷ 7 = 4.2857

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

4.2857 × 100 = 428.57%

Final Answer: 30/7 as a percentage is 428.57%.