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

$20212020201920182017$

Sales $ $537,457$ $ $353,590$ $ $289,828$ $ $206,283$ $ $155,100$

Cost of goods sold $271,129178,595148,064104,99277,550$

Accounts receivable $26,17420,75619,91112,04710,640$

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.