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**Determine the percentage increase or decrease in the situations below:**

a. The initial price of an item is $105, and new price is $80 (give percentage change rounded to two decimal places)

b. The initial value of a house is $400 000, and the new value is $520 000

c. A child’s height is 103cm one year, and 115cm the next year (give percentage change rounded to two decimal places)