The formula to calculate the attrition rate is:
\[ \text{Attrition} = \left( \frac{L}{\frac{S + E}{2}} \right) \times 100 \]
To calculate the attrition rate, we need to:
Let's assume the number of employees that left is 10, the number of employees at the start is 100, and the number of employees at the end is 90.
\[ \text{Attrition} = \left( \frac{10}{\frac{100 + 90}{2}} \right) \times 100 = 10.53\% \]
So, the attrition rate for the company is 10.53%.