55
Calculating percent change
Sales in a company were $75,000 during the fi rst year of opera-
tion. The second year’s sales were $116,000. What percentage
greater were the second year’s sales than fi rst year’s sales?
In this calculation, the number of compound periods is set to 1
(default).
Procedure Key operation Display
Bring up the initial dis-
play in NORMAL mode.
s
000
Select percent change/
compound interest
calculations, and set all
the variables to default
values.
.
B
.
b
OLD PRC(PV)=
000
Enter the old value.
75000
Q
OLD PRC(PV)=
7500000
Enter the new value.
i
116000
Q
NEW PRC(FV)=
11600000
Calculate the percent
change.
i
@
%(I/Y)=
5467
Answer: The second year’s sales increased by 54.67% over
the fi rst year’s sales.
Calculating compound interest rate
You opened an account compounding annually and deposited
$8,000 eighteen years ago. You currently have $9,800. What is
the compound interest rate?
Procedure Key operation Display
Bring up the initial dis-
play in NORMAL mode.
s
000
Select percent change/
compound interest
calculations, and set all
the variables to default
values.
.
B
.
b
OLD PRC(PV)=
000
Enter the old value.
8000
Q
OLD PRC(PV)=
800000
1
2
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