These are some recent stats I've seen or heard.
- 49% of households do not pay taxes (source)
- Christians whose household income is $12,500 or less, give the second highest percentage of income away at 7%. Households making over $90k give 8.8% (source)
Often, Christians are challenged to tithe, just as the Jews were commanded from
Torah, with one exception. Christians are encouraged to be even more generous and give beyond 10% of their income. Well, technically they are encouraged to give "cheerfully", but that has wrongly become synonymous with "more." To the Jews, 10% was regarded as a tax. It was essentially their federal tax only it was more of a flat tax (
Lapin).
I say all this to say, using statistics to encourage people to be generous doesn't mix. "
Figures lie an liars figure." You see, if I give roughly 20% in taxes I could argue I give more than 10%. Only, I don't always give my taxes "cheerfully," That's where giving beyond my duty comes into play. Giving to my local congregation or charity allows me the freedom to give cheerfully and generously.
If you want to shame the rich for not giving a larger percentage of their income compared to the percentage the poor give, then you must also praise the rich for paying taxes to support services for the poor who pay nothing for them.
Just leave statistics out of it and focus on giving cheerfully. It also helps to avoid the temptation of judging others and what they give.