Step 1: Start with the fraction 57/70.

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

57 ÷ 70 = 0.8143

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

0.8143 × 100 = 81.43%

Final Answer: 57/70 as a percentage is 81.43%.