import java.util.Scanner;public class Xiaoming {    public static void main(String[] arg){       Scanner scanner=new Scanner(System.in);        System.out.println("输入你上次考试成绩");        int m1=scanner.nextInt();        System.out.println("输入你这次考试成绩");        int m2=scanner.nextInt();        float BiLu=(float) (m2-m1)/(float) m1;        System.out.printf("你的成绩提高率为%.2f%%",BiLu);    }}