Step 1: Start with the fraction 42/8.

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

42 ÷ 8 = 5.25

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

5.25 × 100 = 525.0%

Final Answer: 42/8 as a percentage is 525.0%.