Step 1: Start with the fraction 100/7.

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

100 ÷ 7 = 14.2857

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

14.2857 × 100 = 1428.57%

Final Answer: 100/7 as a percentage is 1428.57%.