Answer: A. The value of his investment decreased by 16% during this time period.
Step-by-step explanation:
Here the initial amount = n
Final amount after 1 years = 0.84n
The total change in the initial amount = n - 0.84n = 0.16 n
[tex]\text{ The percentage change in the initial amount} = \frac{\text{ the total change in initial amount}}{\text{ Initial amount}}\times 100[/tex]
= [tex]\frac{0.16 n }{n} \times 100 = 16\%[/tex]
Thus, the amount is decreases by 16% in one year,
⇒ Option A is correct.