can someone please tell me how to figure this out please and thank you :)

Answer: B) 25% decrease
Explanation:
[tex]\frac{New - Original}{Original}[/tex]
Since it dropped FROM 64 TO 48, then 64 is the Original value and 48 is the New value.
[tex]\frac{48 - 64}{64}[/tex] = [tex]\frac{-14}{64}[/tex] = [tex]\frac{-1}{4}[/tex] = -0.25
Convert the decimal into percent by moving the decimal 2 places to the right and adding the percent sign (%) = -25%
Note: The negative sign represents "decrease"