Step 1: Start with the fraction 45/625.

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

45 ÷ 625 = 0.072

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

0.072 × 100 = 7.2%

Final Answer: 45/625 as a percentage is 7.2%.