This comes from a report from Sensor Tower where they found that Pokemon Go has amassed 200 Million dollars in revenue in its first month. This is an update to their report where they indicated that it had surpassed 160 Million 4 days ago. For more detailed comparisons, check out the site. Here’s a graph comparing it to other notable mobile titles:
Nintendo is estimated to make approx. 13% of said revenue for the royalties earned alongside the money earned from their stake in Creatures inc and Niantic.