208. Calculating uplift for AB-test variations

When reporting AB-test results we often calculate an uplift in percentage: “The uplift of AB-test X in activation rate is Y%.”

👉 In this exercise calculate an uplift in soft activation rate for longer_onboarding_201803 AB-test.

⚠ Submit the integer part of the uplift as the answer. For example, if the uplift is 15.84% submit 15 as the answer.

💡 Try to write a query that would report an uplift for each variation like so:

...
variation cohort_size soft_activation_rate soft_activation_rate_uplift
control 184 24.44 0
long_onboarding 167 72.31 195.86
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