30 POINTS!!! Calculate the percent increase or decrease between the starting and ending quantities below. Round your answer to one decimal place.1) Start: 3 End: 102) Start: 9 End: 203) Start: 100 End: 85

1) There is 233.33% increase in the quantity.2) There is 122.22% increase in the quantity.3) There is 15% decrease in the quantity.Step-by-step explanation:1) Start: 3 End: 10Change = End - StartChange = [tex]10-3=7[/tex]As the change is positive, therefore, it shows an increasePercent increase = [tex]\frac{Change}{Start}*100[/tex]Percent increase = [tex]\frac{7}{3}*100 = 233.33\%[/tex]There is 233.33% increase in the quantity.2) Start: 9 End: 20Change = [tex]20-9=11[/tex]As the change is positive, it shows an increase.Percent increase = [tex]\frac{Change}{Start}*100[/tex]Percent increase = [tex]\frac{11}{9}*100 = 122.22\%[/tex]There is 122.22% increase in the quantity.3) Start: 100 End: 85Change = 85-100 = -15Negative sign shows that it is a decrease in quantity.Percent decrease = [tex]\frac{Change}{Start}*100[/tex]Percent decrease = [tex]\frac{15}{100}*100 = 15\%[/tex]There is 15% decrease in the quantity.Keywords: Percentage, increaseLearn more about percentages at:brainly.com/question/8054589brainly.com/question/7932185#LearnwithBrainly