Based on the $2023$ fact pattern below, what is the Net Revenue Churn and Net Revenue Retention Rate for the subscription$-$based target company, StreamFusion, in $2023?$

Existing recurring revenue contracts of $$85\mathrm{.}0$ million as of January $1,2023$

Canceled recurring revenue contracts equal to $$17\mathrm{.}0$ million

Revenue generated from upselling existing clients equal to $$4\mathrm{.}0$ million

Revenue generated from price increases equal to $$2\mathrm{.}0$ million

Revenue generated from increased license sales equal to $$3\mathrm{.}5$ million