Here you can find the source of percentage(BigDecimal bd)
public static String percentage(BigDecimal bd)
//package com.java2s; /**//from ww w.j a v a2 s .c om * Copyright (c) 2011 Loganalysis team and contributors * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Raffael Schmid - initial API and implementation */ import java.math.BigDecimal; import java.math.RoundingMode; public class Main { private static final BigDecimal HUNDRED = new BigDecimal(100); public static String percentage(BigDecimal bd) { return bd.multiply(HUNDRED).setScale(1, RoundingMode.HALF_UP).toString(); } }