xercise $13-3($Algo$)$ Computing and analyzing trend percents LO P$1$

$20212020201920182017$

Sales $ $636,543$ $ $416,041$ $ $328,886$ $ $239,190$ $ $178,500$

Cost of goods sold $314,406205,410164,254118,75387,465$

Accounts receivable $31,00024,42222,56213,96912,192$

Compute trend percents for the above accounts, using $2017$ as the base year. For each of the three accounts, state whether the situation as revealed by the trend percents appears to be favorable or unfavorable.