Step 1: Start with the fraction 45/8.

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

45 ÷ 8 = 5.625

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

5.625 × 100 = 562.5%

Final Answer: 45/8 as a percentage is 562.5%.