Answer: 60%
Explanation:
To calculate the percentage decrease in price from yesterday's cost of $115 to today's price of $46, you can use the following formula:
Percentage Decrease = [(Initial Price - Final Price) / Initial Price] * 100
In this case:
Initial Price = $115
Final Price = $46
Percentage Decrease = [($115 - $46) / $115] * 100
Percentage Decrease = ($69 / $115) * 100
Percentage Decrease = 0.6 * 100
Percentage Decrease = 60%
So, the price of the item has decreased by 60%.