Two digits is considered a significant increase for any coin. However, earlier this year in January, Aeron, had a few straight days of 3 digit gains--over 300%. Of course this was short-lived as you might have expected.
A very drastic improvement in an unpopular coin is commonplace. but when there is a popular coin like Ripple, Etherum, NEO and Bitcoin that have increased more than two digits then it is amazing. The enormous market share has made such an increase will have a tremendous impact on the state of crypto world and the state of the world financial system that is now beginning to be affected by crypto.