How much percent of biodiversity on land will be lost if all rain forests are destroyed?

Forests is a major part of the biodiversity, forests cover about 6% of the planet, but they harbor up to 90% of the world's terrestrial biodiversity. This biodiversity is irreplaceable, and also has important economic uses. However, forests continue to disappear at an alarming rate. I therefore believe if all rain forests are destroyed then it means about 90% of terrestrial biodiversity will be destroyed.