Multiple data points show that Google has increased the visibility of its local listings by 20-30% and its local one box by ~10-20%.
It will be interesting to see if this sticks, for how long, and if they dial it up more. For pages that were displaced, that’s a significant drop of 7 spots. And in some cases, Google simply moved their local pack to the number 1 position so the first organic listing got bumped below the fold.
Mozcast shows 20% increase in Local pack visibility:
Advanced Web Ranking shows 20-30% increase depending on how far back you go:
Mozcast also shows the local one pack increased about 10-20%: