Step 1: Start with the fraction 30/80.

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

30 ÷ 80 = 0.375

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

0.375 × 100 = 37.5%

Final Answer: 30/80 as a percentage is 37.5%.