Dear Gloria, I don't know any better than that tithing means giving TEN percent. Should a percent in the next paragraph not read ten percent?

The concept of tithing is that when you are in need of wealth, you give a
percent of the wealth you have. If you have little wealth, still you give a
percent. In the old days, the poorest of the poor were to give away a
greater percent than the wealthy. That is how giving works.