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Resetting the Percent Change/Compound Interest
Worksheet Variables
• To reset the Percent Change/Compound Interest variables to default
values, press & z while in the Percent Change/Compound
Interest worksheet.
• To reset default values for all calculator variables and formats, press
& } !.
Entering Values
• For percent-change calculations, enter values for any two of the
three variables (OLD, NEW, and %CH) and compute a value for the
unknown variable (leave #PD=1). A positive percent change
represents a percentage increase; a negative percent change
represents a percentage decrease.
• For compound-interest calculations, enter values for the three
known variables and compute a value for the unknown fourth
variable.
– OLD= present value
– NEW= future value
– %CH= interest rate per period
–
#PD= number of periods
• For cost-sell-markup calculations, enter values for two of the three
variables (OLD, NEW, and %CH) and compute a value for the
unknown.
– OLD = cost
– NEW= selling price
–
%CH= percent markup
– #PD= 1
Computing Values
1. To select the Percent Change/Compound Interest worksheet, press
& q. The current value for
OLD is displayed.
2. To clear the worksheet, press & z.
Variable Default Variable Default
OLD
0
%CH
0
NEW
0
#PD
1