To find the percent of change, you can use the following formula:
In this case, the old value is $521.73 (original cost) and the new value is $413.68 (sale price).
Now, plug in the values:
First, calculate the change in value:
Now, divide that by the old value:
Finally, multiply by 100 to convert to a percentage:
The percent of change is approximately -20.73%. This indicates a decrease of about 20.73% in the price.