$18$ a$.$ Perform a horizontal analysis, showing the percentage change in each income statement component betweer

b$.$ Perform a vertical analysis, showing each income statement component as a percentage of sales for each year

Note: Use cell references cell A$4$ to C$15$ from the given information to complete this question. Fo requirements, round your answers to $1$ decimal place. $($i$.$e$.,0\mathrm{.}234$ should be entered as $23\mathrm{.}4).$

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