ANSWER
56.36%
EXPLANATION
The store posted a discounted price of $24.
The original price of the jeans is $55.
To calculate the percent decrease, we first have to subtract the new cost of the jeans from the original price of the jeans:
$55 - $24 = $31
Now, we divide this by the original price and multiply by 100:
[tex]\frac{31}{55}\cdot\text{ 100 = 56.36\%}[/tex]There was a 56.36% decrease.