Step 1: Start with the fraction 45/7.

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

45 ÷ 7 = 6.4286

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

6.4286 × 100 = 642.86%

Final Answer: 45/7 as a percentage is 642.86%.