Step 1: Start with the fraction 55/100.

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

55 ÷ 100 = 0.55

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

0.55 × 100 = 55.0%

Final Answer: 55/100 as a percentage is 55.0%.