54
Procedure Key operation Display
Move to the last date 
and calculate.
z
 
@
M-D-Y 2=[MO]
2-21-2011
Answer:  The last date is February 21, 2011.
Percent Change/Compound Interest Cal-
culations 
Using percent change/compound interest calculations, you can 
determine the values of percentage rates of change (increase or 
decrease) or interest rates compounding periodically.
Variables used in percent change/compound interest 
calculations 
Variable Description Default value
OLD PRC (PV) Old price (old value) 0
NEW PRC (FV) New price (new value) 0
% (I/Y) Percent change 0
PERIODS (N) Number of compounding periods 1
Basic operations
Refer to page 19 for basic variable operations.
1.  Press 
s
 to clear the display.
• Make sure the calculator is in NORMAL mode.
2.  Select percent 
change/ compound interest cal-
culations by pressing 
.
 
B
.
•  To end percent change/com-
pound interest calculations, press  
s
. 
•  If you press 
s
 during entry, any entered values will be 
cleared.
3.  Enter the values of any three known variables: old price, new 
price, percent change, or number of compounding periods.
4.  Move to the variable you wish to calculate, using the 
z
 
and 
i
 keys, and press 
@
 to calculate.
OLD PRC(PV)=
000