src/Money/DataMapper/Data/Money/Budget.php
public function getAmountDifference()
    {
        $amount = ($this->hasChildren() ? $this->getGlobalAmount() : $this->getAmount());
        return ($amount - $this->getTransactionsAmount());
    }
public function getAmountDifference()
    {
        $amount = ($this->hasChildren() ? $this->getGlobalAmount() : $this->getAmount());
        return ($amount - $this->getTransactionsAmount());
    }
Get budget amount difference

@return float