Please help me answer the percentage of change in Q3c below :

Harvey Company designs and produces surgical lasers. Its product is brilliantly designed, but the manufacturing process has been plagued by chronic quality control problems. To help address the situation, Harvey formed a cross-functional team of managers that quantified its costs of quality over the last two quarters as follows: 3. Refer back to the Template A tab: a. Create a PivotTable based on the data in cells A5 through H17. b. Using PivotChart, create a stacked bar chart that includes a total of two bars-one for each quarter. Each bar should quantify that quarter's total quality costs as well as the portion of those costs that fall within each of the four quality cost categories (i.e., prevention, appraisal, internal failure, and external failure). c. Using PivotChart again, create a stacked bar chart that includes a total of two bars-one for each quarter. Each bar should quantify that quarter's total quality costs as a percent of that quarter's sales. It should also depict each of the four quality cost categories (i.e., prevention, appraisal, internal failure, and external failure) as a percent of sales. Complete this question by entering your answers in the tabs below. Using PivotChart again, create a stacked bar chart that includes a total of two bars-one for each quarter. Each bar should quantify that quarter's total quality costs as a percent of that quarter's sales. It should also depict each of the four quality cost categories (i.e., prevention, appraisal, internal failure, and external failure) as a percent of sales. Based on a review of your bar chart, answer the following questions: (Round your answers to 2 decimal places.)