Question

Olivia scored 82 points on the first mathematics test of the year. On the second mathematics test, she scored 78 points. What is the percent of change in the number of points she scored between the first and second tests? Round your answer to the nearest hundredths place.

Answer 1

The percent of change in the number of points she scored between the first and second tests  = 4.878 %

What is percentage decrease?

If the data is decreasing,

Decrease = Original Number - New Number.

Then: divide the decrease by the original number and multiply the answer by 100.

% Decrease = Decrease ÷ Original Number × 100.

Given that:

The score of first Math test = 82

The score of second Math test = 78

Changes occurs in marks by=78-82

                                               =-4

So, there is decrease in marks.

We have to find the decrease percentage:

Decrease%= $\frac{change \;in \;value}{Original\; value} *100$

                   = $\frac{4}{82} *100$

                   = 0.04878 * 100

                  = 4.878 %

There is 4.88% decrease in Olivia's score.

Learn more about percentage decrease here:

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