Walgreens Pharmacy announced it would shut down numerous underperforming stores.

The drug store chain’s plan to reshape its footprint was revealed on Thursday when Walgreens Boots Alliance CEO Tim Wentworth stated that the company would close a “meaningful percent” of its 8,600 locations. It is unknown how many closures will occur with this shake-up, though Wentworth said the company is reviewing around 25% of its unprofitable stores.