Book 2, reading 17, page 204, mistake?

Hi there, In book 2 reading 17 “low-basis stocks” page 204, it says 83.3%*1.15=1? Is it a mistake? Can someone read it and answer? Thx.

As indicated in the CFAI’s errata, the 83.3% shall be revised to be 86.7%.

Thx. Where is the errata?

CFAI website