Step 1: Start with the fraction 12/45.

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

12 ÷ 45 = 0.2667

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

0.2667 × 100 = 26.67%

Final Answer: 12/45 as a percentage is 26.67%.