Step 1: Start with the fraction 64/70.

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

64 ÷ 70 = 0.9143

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

0.9143 × 100 = 91.43%

Final Answer: 64/70 as a percentage is 91.43%.