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Percentage Functions; Percent Difference - HP 12C Platinum User Manual

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246 Appendix B: Algebraic Mode (ALG)

Percentage Functions

In most cases, b divides a number by 100.
The one exception is when a plus or minus sign precedes the number.
For instance, 25 b results in 0.25.
To find 25% of 200, press: 200 § 25 b}. (Result is 50.)
You can also calculate a net amount all in one calculation:
For instance, to decrease 200 by 25%, just enter 200-25b}. (Result is 150.)
Example: You borrow $1,250 from a relative, and agree to repay the loan in a
year with 7% simple interest. How much money will you owe ?
Keystrokes
(ALG mode)
OO
1250+7b
}

Percent Difference

To find the percent difference between two numbers:
1. Key in the base number.
2. Press } to separate the other number from the base number.
3. Key in the other number.
4. Press à.
Example: Yesterday your stock fell from 35.5 to 31.25 per share. What is the
percent change ?
Keystrokes
(ALG mode)
OO
35.5}
31.25
à
Display
Clears any pending operations.
0.00
Interest on the loan is $87.50.
87.50
You owe this amount at the end of
1,337.50
one year.
Display
Clears any pending operations.
0.00
Keys in the base number and
35.50
separates it from the other number.
Keys in the other number.
31.25
Nearly a 12% decrease.
-11.97

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