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Math·Problem-Solving and Data Analysis·Percentages

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The function $f$ is defined by $f(n)=53(0.15{)}^n$. For any positive integer $n$, the value of $f(n)$ is $p\%$ less than the value of $f(n-1)$. What is the value of $p$?

A

$15$

B

$47$

C

$53$

D

$85$