Problem $13-2$A Ratios, common$-$size statements, and trend percents. Selected comparative financial statements of Korbin Company follow.

$\backslash$table$[[\backslash$table$[[$Korbin company$],[$Comparative income statement$]]],[$For years ended Dec $31,2021,2020,],[$Sales$,$$$555,000,$$$340,000,$$$278,000$