At the county fair, Chris throws a \(0.15 \mathrm{~kg}\) baseball at a \(2.0 \mathrm{~kg}\) wooden milk bottle, hoping to knock it off its stand and win a prize. The ball bounces straight back at \(20 \%\) of its incoming speed, knocking the bottle straight forward. What is the bottle's speed, as a percentage of the ball's incoming speed?