Step 1: Start with the fraction 19/40.

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

19 ÷ 40 = 0.475

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

0.475 × 100 = 47.5%

Final Answer: 19/40 as a percentage is 47.5%.