How is the "amount of credit" under other state tax credit summary calculated?

It is calculated by using the amount you paid to the other state, then determining if the amount you would have paid to your home state is more or less.  If the amount you would pay to your home state is less, then your credit will be limited to the amount you would have paid to your home state on the at portion of your income.  

If the amount you paid to the other state is less than the amount you would have paid on the same income to your home state, then the credit is the amount you paid to the other state.  

The credit is limited to the lessor or what you would pay on that same income to your home state or what you actually paid to the other state.