Answer:
$835.20
Explanation:
First you need to find out how many profit you had at first by multiplying 145 and $44.17.
So, 145*$44.17 = 6404.65
Then find out how much profit you had after it decreased by multiplying 145 and $38.41.
So, 145*$38.41 = 5569.45
Now to find how much profit you lost, you have to subtract $6,404.65 and $5,569.45.
$6,404.65 - $5,569.45 = $835.20