Step 1: Start with the fraction 81/100.

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

81 ÷ 100 = 0.81

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

0.81 × 100 = 81.0%

Final Answer: 81/100 as a percentage is 81.0%.