need help with section C computing the percentage difference

Ayala inc. has conducted the following analysis related to its product lines, using a traditional costing system (volume-based) and an activity-based costing system. Both the traditional and the activity-based costing systems include direct materials and direct labor (a) Your answer is correct. For each product line, compute operating income using the traditional costing system. Attempts: Correct Answer Your answer is correct. For each product line, compute operating income using the activity-based costing system. Product 540X$ Product 137y Product 249S $ Attempts: Correct Answer Your answer is correct. For each product line, compute operating income using the activity-based costing system. Product 540X$ Product 137y Product 249S $ Using the following formula, compute the percentage difference in operating income for each of the product lines of Ayala [Operating Income (ABC) - Operating Income (traditional cost)] Operating Income (traditional cost). (Round answers to decimal places, e.g. 12.25\%. Enter negative answers using either a negative sign preceding the number e.g. 45.25 parentheses e.g. (45.25)\%.) \begin{tabular}{l|l} Product 540X & % \\ & \\ Product 137Y & % \\ \hline Product 249S & % \end{tabular}