Difference between 2 numbers

public decimal FindDifference(decimal nr1, decimal nr2)
{
  return Math.Abs(nr1 - nr2);
}

result = Math.Abs(value1 - value2);

Math.Abs(number1 - number2);

int result = number1 - number2;
if (result < 0) {
    result *= -1;
}

int result = number1 > number2 ? number1 - number2 : number2 - number1;