HP 113394 User Guide - Page 241
Percentage Functions
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Appendix B: Algebraic Mode (ALG) 241 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) Display OO 0.00 Clears any pending operations. 1250+7b } 87.50 1,337.50 Interest on the loan is $87.50. You owe this amount at the end of one year. 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) Display OO 0.00 Clears any pending operations. 35.5} 35.50 Keys in the base number and separates it from the other number. 31.25 à 31.25 -11.97 Keys in the other number. Nearly a 12% decrease. File name: hp 12c pt_user's guide_English_HDPMF123E27 Page: 241 of 275 Printed Date: 2005/8/1 Dimension: 14.8 cm x 21 cm