change gear BrE
shift gears AmE
switch gears AmE

Then he switched gears: "My goal is to put people to work."

The reporter quickly switches gears and asks him about the war.

When people switch gears and move from one process to another, our brains require some amount of time to begin thinking about something else.

Now we have to switch gears and deal with a labor shortage.

"People just aren't ready to switch gears and think about a small project like this which happens to have an urgent need."

Couldn't you help me to switch gears a little bit?

It took us a game or two to switch gears and get ready for Indiana.

He did not have the luxury of waiting to switch gears.

"But I switch gears so fast that it doesn't cost anything."

My guess is that they simply couldn't switch gears quickly enough to discuss the charts.