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Geography / Grid maps and scale / Grade 11 / ggbby

Choose the Baseline for Percent Change - Practice 1

Percent change uses the earlier value as denominator: (later - earlier) / earlier x 100.

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Percent change uses the earlier value as denominator: (later - earlier) / earlier x 100. It differs from a percentage-point change in a rate. These fictional population records use unchanged boundaries.

Worked example

A population growing from 800 to 1,000 rises 25% because the increase 200 is divided by 800.

A population growing from 800 to 1,000 rises 25% because the increase 200 is divided by 800.
A population growing from 800 to 1,000 rises 25% because the increase 200 is divided by 800.
Question 1 Fictional town Alder changes from 200 to 220 people with the same boundary. What is the percent increase?
Question 2 Fictional town Birch changes from 300 to 360 people with the same boundary. What is the percent increase?
Question 3 Fictional town Cedar changes from 400 to 520 people with the same boundary. What is the percent increase?
Question 4 Fictional town Dune changes from 500 to 700 people with the same boundary. What is the percent increase?
Question 5 Fictional town Elm changes from 600 to 660 people with the same boundary. What is the percent increase?