Yi Chen made a $6,400 investment at the beginning of a year. By the end of the year, the value of the investment had decreased by 8.2%. What was it's value at the end of the year?

Question

How would I do this? I am so very lost!

Value= 6400(1-.082)

would it not be $6400/100 then multiplied by 8.2%??

Then subtract the answer from $6400?

Yi Chen made a $6,400 investment at the beginning of a year. By the end of the year, the value of the investment had decreased by 8.2%. What was it's value at the end of the year?