"输出两次成绩提高的百分比，保留两位小数"

import java.util.Scanner;

public class Main{

public static void main(String[]args){

Scanner scanner=new Scanner(System.in);

System.out.println("lastscore:");

int lastscore=scanner.nextInt;

System.out.println("nextscore:");

int nextscore=scanner.nextInt;

double percent=(double)(nextscore-lastscore)/lastscore*100;

System.out.printf("%.2f%%",percent);

scanner.close();

}

}