How can I find the percentage change in sales, using the information in blue only which are (Sales = 300,000, Variable cost = 180,000, and fixed cost = 100,000) without using other information ? TABLE 12-2 How Operating Leverage Affects EBIT: An Increase in Pierce Grain Company's Sales Base Sales Forecast Sales Item Leyel, Level, t + 1 Percentage Change Sales $300,000 $360,000 ? +10% Less: Total variable costs 180,000 210,000 2 180,000 - 1.28 Revenue before fixed costs $120,000 $146000 Less Total fixed costs 100.000 100,000? EBIT $ 20.000 $ 44900 ? +10%