An item sold at k25 is now marked at k17. What is the percentage decrease?

To calculate the percentage decrease, you can use the following formula:

Percentage decrease = [(Original value - New value) / Original value] * 100

In this case, the original value was k25, and the new value is k17. Plugging in the values, we can calculate the percentage decrease:

Percentage decrease = [(25 - 17) / 25] * 100

Percentage decrease = (8 / 25) * 100

Percentage decrease = 0.32 * 100

Percentage decrease = 32%

Therefore, the item has experienced a 32% decrease in price.