see p.6 on Taking Effective Action. There is no complete list or overview of KPIs, only a few pieces of data on progress.

Page 6: "In 2022 we significantly extended our audit oversight by over 25%, against 2021, completing 200 unique supplier audits along with 25 re-audits, covering suppliers in 16 countries. In order to extend our geographical reach, we partnered with Intertek to conduct the majority of audits."