[SOLVED] Percentage difference upgrading from a RTX 2060 (non-super) to a RTX 2070 Super?

My friend plays FPS games on a 1080p 144 FPS monitor; mainly Rust. And he's not interested in waiting for the the coming 30 series or Big Navi. Anyone have a rough number of the percentage improvement from the 2060 to the 2070 Super?