Rates and percentages

Rates and percentages
 * A percentage:is a ratio as a fraction of 100.

Activity
Represent in a circle diagram the number 3/4

2nd Activity
Given a histogram draw a pie chart for the following sentence "Pre kinder pupils on 2016 show over 50.5 percent of obesity" [El Mercurio March 10, 2017]

3rd Activity
What could means a negative rate?, represent on a line