Using Percentage Worksheets With Answer Key - S1 Topic 15 Page 16
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19Lesson 2:
(New value – original value)
Percentage change =
× (100% )
(original value)
Questions:
1.
$6.5
$6
$6
-
$6.5
100
%
=-7.69%
$6.5
The percentage change is -7.69%.
The price has increased / decreased.
$12.5
-
$12
2.
100
%
=4.17%
$12
The percentage change is 4.17%.
The price is increased.
$21
-
$18
3.
100
%
= 16.7%
$18
The percentage change is 16.7%.
The price is increased.
4.
3×$30 = $90
2×$30 = $60
$60
-
$90
100
%
= -33.3%
$90
The percentage change is -33.3%
The price is decreased.
16
S1 Topic 15: Percentages
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