Step 1: Write the formula for determining what percent one number is of another:

\[ \text{x} = \left( \frac{a}{b} \right) \times 100 \]

where:

• \(a = 50\) (the number you have)
• \(b = 1615\) (the total value)

Step 2: Substitute the values into the formula:

\[ \text{x} = \left( \frac{ 50 }{ 1615 } \right) \times 100 \]

Step 3: Calculate the fraction:

\[ \frac{ 50 }{ 1615} \approx 0.03096 \]

Step 4: Multiply by 100 to convert to percentage:

\[ \text{x} = 0.03096 \times 100 \approx 3.096 \]

Answer: 50 is approximately 3.096% of 1615.