Percentage Increase in Sales Analysis

A study was conducted to analyze the effect of advertising on sales for two different products, X and Y, over four months. The sales data collected is summarized in the table below:

The percentage increase in sales for each product over the four-month period is to be computed. The formula for percentage increase is given by:

Percentage Increase = $$\frac{( ext{Final Value} - ext{Initial Value})}{ ext{Initial Value}} imes 100$$

Calculate the percentage increase in sales for Product X over the four months, and record your answer as a decimal to two decimal places.