Please help. I have a math problem for a finance class. I need to find operating income using the formula OPERATING REVENUE-OPERATING EXPENSE= OPERATING INCOME
and the difference between the two years. The first year the numbers fall into the formula as 421,314-437,424=-16,110.
The next year is 462,982-462,293=689
So from the first year when the number is in the negative as -16,110 and the increase to the next year is 689. So the positive increase between the two years is 15,421. Is this right? I believe it is but one of my team members is arguing with me.

Question

Please help. I have a math problem for a finance class. I need to find operating income using the formula   OPERATING REVENUE-OPERATING EXPENSE= OPERATING INCOME 
and the difference between the two years. The first year the numbers fall into the formula as   421,314-437,424=-16,110.
The next year is 462,982-462,293=689
So from the first year when the number is in the negative as -16,110 and the increase to the next year is 689.  So the positive increase between the two years is 15,421.  Is this right? I believe it is but one of my team members is arguing with me.