Simplify the expression. 
Definitions:
Price Increase
A rise in the cost of goods and services, which can be caused by factors such as inflation, increased production costs, or higher demand.
Demand Curves
Graphs displaying the relationship between the price of a good and the quantity demanded by consumers, typically downward sloping.
Original Price
The initial price of a product or service before any discounts, markdowns, or promotions.
Percentage Changes
A mathematical calculation that indicates how much a quantity has increased or decreased in percentage terms compared to a previous period.
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