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Percentages
ActiCalc uses percentages in two different modes.
In this example, we type 199.95, then press the enter key. Without pressing any operator, we type 25%. In this case, ActiCalc automatically turns this into a multiplication operation, giving us a new balance that is 25% of 199.95.
The second mode adds or subtracts a percent from the previous balance. In this example, we type 199.95-25%. ActiCalc converts this into a slightly more complicated sequence on the tape. In row 1, the first balance is entered. ActiCalc computes 25% of that balance in row 2. Finally, in row 3, ActiCalc builds an active reference to deduct the 25% amount from the original balance. This all happens automatically when you enter those few keystrokes. Of course, you could have built this same 3-row sequence yourself, but it would have required more keystrokes. This second mode is particularly useful when calculating discounts or bonuses.
More about advanced functions.