Calculate a new price from a percentage increase, or compare two prices to get the increase %.
Mode 1: Increase Amount = Current Price × (Increase % ÷ 100); New Price = Current Price + Increase Amount.
Mode 2: Increase Amount = New Price − Old Price; Increase % = (Increase Amount ÷ Old Price) × 100. A negative result means the price decreased.
Multiply the current price by the increase percentage (as a decimal), then add that amount to the current price to get the new price.
The amount is the absolute change in currency; the percentage is that change relative to the original price.
Yes. In the second mode, if the new price is lower than the old price, the result is a negative percentage (a decrease).