That's not what the verse says.
Isaiah 45:7 actualy says:
I form light and create darkness; I make well-being and create
calamity; I am the LORD, who does all these things.
This comes from a form of Hebrew poetry. If I remember correctly it is called parallelism...
The first word is then offset by the scond in an opisite fashion.
Such is light...then darkness
Then
well being followed by the opposite which is calamity.
For the poem to work with evil the first contrasting word would be good.
The second verse you presented using the KJV is a bad translation. You can
click here to see what the other translations say.