Common size and trend percentages for a company's net sales, cost of goods sold, and expenses follow

$-$Size Percentages

Gavre & Exile

Net sales

Cost of goods sold

Expenses

$100\mathrm{.}0\%55\mathrm{.}8$

$32\mathrm{.}4$

$100\mathrm{.}0\%$

$100\mathrm{.}0\%$

$49\mathrm{.}6$

$108\mathrm{.}5\%$

$107\mathrm{.}3\%$

$110\mathrm{.}7$

$100\mathrm{.}0$

$100\mathrm{.}0$

$104\mathrm{.}6$

$111\mathrm{.}9$

$115\mathrm{.}2$

Required:

a$.$ Calculate the profit percentage for $2021,2022$ and $2023.($Round the final answers to $2$ decimal places.$)$

Profit Percentage

$\%$

$\%$

$2021$

$2022$

$2023$

$\%$

$2023$

$30\mathrm{.}7$

$2021$

$100\mathrm{.}0\%$

$02$:$19$:$52$

$53\mathrm{.}330\mathrm{.}3$

$2021$

Trend Preven

$2023$

b$.$ Determine whether the company's profit increased, decreased, or remained unchanged during this three$-$year period