Question

4. Write a program to find and display the percentage difference, when:
(a) a number is updated from 80 to 90
(b) a number is updated from 7.5 to 7.2​

Answer 1

Answer:public class KboatPercentIncrease

{

   public static void main(String args[]) {

       int orgNum = 80;

       int newNum = 90;

       int inc = newNum - orgNum;

       double p = inc / (double)orgNum * 100;

       System.out.println("Percentage Difference = " + p + "%");

   }

}

OUTPUT

Explanation:

Answer 2

Answer:

class PerentChange

{

   public static void main(double org, double New)

   {

       System.out.println("Original Number: "+org);

       System.out.println("New Number: "+New);

       double diff= New-org;

       double perc= diff / (double)org * 100;

       System.out.println("Percentage of Change: "+perc+"%");

   }

}