Step 1: Start with the fraction 100/9.

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

100 ÷ 9 = 11.1111

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

11.1111 × 100 = 1111.11%

Final Answer: 100/9 as a percentage is 1111.11%.