To calculate the Evolution Index:
\[ \text{EI} = \frac{\text{GRP}}{\text{GRM}} \times 100 \]
Where:
An Evolution Index is a measure used to compare the growth rate of a product to the growth rate of the market. It is calculated by dividing the growth rate of the product by the growth rate of the market and then multiplying by 100. This index helps in understanding how well a product is performing relative to the market.
Let's assume the following values:
Using the formula:
\[ \text{EI} = \frac{8}{5} \times 100 = 160 \]
The Evolution Index is 160%.