$\backslash$table$[[$Income Statements,,$],[,$Year $4,$Year $3],[$Sales$,$$$201,900,$$$181,900,,],[$Cost of goods sold,$143,700,121,700,,],[$Selling expenses,$21,300,19,300,,],[$Administrative expenses,$12,100,14,100,,],[$Interest expense,$3,600,5,600,,],[$Total expenses,$180,700,160,700,,],[$Income before taxes,$21,200,21,200,,],[$Income taxes expense,$5,400,3,300,,],[$Net income,$$15,800,$$$17,900,,]]$

Required

a$.$ Perform a horizontal analysis, showing the percentage change in each income statement component between Year $3$ and Year $4$

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

Complete this question by entering your answers in the tabs below.

Required $A$

Perform a horizontal analysis, showing the percentage change in each income statement component between Year $3$ and Year $4.$

Note: Negative answers should be indicated by a minus sign. Round your answers to $1$ decimal place. $($i$.$e$.,0\mathrm{.}234$ should be entered as $23\mathrm{.}4).$

$\backslash$table$[[$ZACHARY COMPANY$],[$Horizontal Analysis of Income Statements$],[$Sales$,\backslash$table$[[$Percentage Change$],[$over Year $3]]],[$Cost of goods sold,$]]$