Step 1: Start with the fraction 42/16.

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

42 ÷ 16 = 2.625

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

2.625 × 100 = 262.5%

Final Answer: 42/16 as a percentage is 262.5%.