What do you do when you realize that a company has reduced it's package size, but not necessarily it's price?

"Which brands have you noticed reducing their package sizes?  How does it make you feel?"

I purchase a different brand instead (0.0%)

I consider the cost per weight of each competitive brand (0.0%)

I purchase it anyway (0.0%)

I don't buy the product altogether (0.0%)

What do you do when you realize that a company has reduced it's package size, but not necessarily it's price?