stock

//TestStock.java
public class TestStock {
  public static void main(String[] args) {
    Stock stock = new Stock("LKSS", "Limerick Software Solutions");
    stock.previousClosingPrice = 79.45;
    stock.currentPrice = 79.65;
    double percentageChange = stock.getChangePercent();
    System.out.printf("Name: %s\nPercent change: %.3f", stock.name, percentageChange);
  }
}

//Stock.java
public class Stock {
  String symbol;
  String name;
  double previousClosingPrice;
  double currentPrice;

  Stock(String symbol, String name) {
    this.symbol = symbol;
    this.name = name;
  }

  double getChangePercent() {
    return ((currentPrice - previousClosingPrice) / previousClosingPrice) * 100;
  }
}