final Long numberOfUsers = fromLaunchToSpecifiedMonthgetcompanyEnumValue; final Integer totalUserNumber = comMapgetcompanyEnumValue; numberOfUserstotalUserNumber保留两位小数使用BigDecima

final BigDecimal numberOfUsersBD = new BigDecimal(numberOfUsers); final BigDecimal totalUserNumberBD = new BigDecimal(totalUserNumber);

BigDecimal result = numberOfUsersBD.divide(totalUserNumberBD, 2, RoundingMode.HALF_UP);