55
Calculating per
cent c
h
ang
e
Sales in a compan
y w
ere $75,000 dur
ing the fi
rst y
ear of oper
a-
tion.
The second y
ear’
s sales w
ere $116,000.
What percentage
g
reater w
ere the second y
ear’
s sales than fi
rst y
ear’
s sales?
In this calculation, the n
umber of compound per
iods is set to 1
(def
ault).
Pr
ocedure
K
e
y
operation
Displa
y
Br
ing up the initial dis-
pla
y in NORMAL mode
.
s
000
Select percent change/
compound interest
calculations
, and set all
the v
a
riab
les to def
ault
v
alues
.
.
B
.
b
OLD
PRC(PV)=
000
Enter the old v
alue
.
75000
Q
OLD
PRC(PV)=
7500000
Enter the ne
w v
alue
.
i
116000
Q
NEW
PRC(FV)=
11600000
Calculate the percent
change
.
i
@
%
(
I/Y
)
=
54
6
7
Ans
wer:
The second y
ear’
s sales increased b
y
54.67% o
v
er
the fi
rst y
ear’
s sales
.
Calculating compound interest rate
Y
ou opened an account compounding ann
ually and deposited
$8,000 eighteen y
ears ago
. Y
ou currently ha
v
e
$9,800.
What is
the compound interest r
ate?
Pr
ocedure
K
e
y
operation
Displa
y
Br
ing up the initial dis-
pla
y in NORMAL mode
.
s
000
Select percent change/
compound interest
calculations
, and set all
the v
a
riab
les to def
ault
v
alues
.
.
B
.
b
OLD
PRC(P
V
)
=
000
Enter the old v
alue
.
8000
Q
OLD
PRC(P
V
)
=
8
00000
1
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3 Financial FunctionsCurrent.indd 55
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