Step 1: Start with the fraction 51/68.

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

51 ÷ 68 = 0.75

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

0.75 × 100 = 75.0%

Final Answer: 51/68 as a percentage is 75.0%.