Percentages: Increase or Decrease

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is often used to compare relative sizes or to describe how much something has increased or decreased.

Front

How do you calculate the percent decrease?

Back

Percent decrease is calculated by taking the difference between the original value and the new value, dividing that difference by the original value, and then multiplying by 100. Formula: ((Original - New) / Original) x 100.

Front

How do you calculate the percent increase?

Back

Percent increase is calculated by taking the difference between the new value and the original value, dividing that difference by the original value, and then multiplying by 100. Formula: ((New - Original) / Original) x 100.

Front

What is the percent decrease from $65.50 to $52.40?

Back

20% decrease.

Front

What is the percent increase from 35 to 70?

Back

100% increase.

Front

What is the percent change from 24 teachers to 30 teachers?

Back

25% increase.

Front

What is the percent decrease in price from $25 to $15?

Back

40% decrease.

Front

What is the percent increase from $30 to $110?

Back

267% increase.

Front

If an item costs $80 and is on sale for $60, what is the percent decrease?

Back

25% decrease.

Front

If a population increases from 200 to 300, what is the percent increase?

Back

50% increase.