Purchase price of the house = $360,000
Price of the house after 1 year = $253,800
Percent decrease in the value of the house = * 100
⇒ Percent decrease in the value of the house = * 100
⇒ Percent decrease in the value of the house = * 100
⇒ Percent decrease in the value of the house = 29.5%
Hence, the price of the house decreased by 29.5% over an year.