There is 4.88% decrease in Olivia's score.
Step-by-step explanation:
Given,
Score on first math test = Old value = 82 points
Score on second math test = New value = 78 points
Change = New value - Old value
Change = 78 - 82 = -4
The negative sign indicates the decrease.
Decrease percent = [tex]\frac{Change}{Old\ value}*100[/tex]
Decrease percent = [tex]\frac{4}{82}*100=\frac{400}{82}[/tex]
Decrease percent = 4.88%
There is 4.88% decrease in Olivia's score.
Keywords: percentage, difference
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