Section 2: Percentage And Calendar Functions; Net Amount; Percent Difference - HP 12c User Manual

Net Amount

A net amount — that is, the base amount plus or minus the percentage amount —
can be calculated easily with your hp 12c, since the calculator holds the base
amount inside after you calculate a percentage amount. To calculate a net amount,
simply calculate the percentage amount, then press = or -.
Example: You're buying a new car that lists for $13,250. The dealer offers you
a discount of 8%, and the sales tax is 6%. Find the amount the dealer is charging
you, then find the total cost to you, including tax.
Keystrokes
13250\
8b
-
6b
=

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.
If the other number is greater than the base number, the percent difference will be
positive. If the other number is less than the base number, the percent difference
will be negative. Therefore, a positive answer indicates an increase, while a
negative answer indicates a decrease.
If you are calculating a percent difference over time, the base number is typically
the amount occurring first.
Example: Yesterday your stock fell from 58
percent change ?
Keystrokes
58.5\
53.25
à
File name: hp 12c_user's guide_English_HDPMBF12E44
Printered Date: 2005/7/29

Section 2: Percentage and Calendar Functions

Display
13,250.00
Keys in the base amount and
separates it from the percentage.
1,060.00
Amount of discount.
12,190.00
Base amount less discount.
731.40
Amount of tax (on $12,190).
12,921.40
Total cost: base amount less discount
plus tax.
1
/ to 53
2
Display
58.50
Keys in the base number and
separates it from the other number.
53.25
Keys in the other number.
–8.97
Nearly a 9% decrease.
Page: 27 of 209
Dimension: 14.8 cm x 21 cm
27
1
/ per share. What is the
4