So, all that $ we gave to nefarious causes (twi). Well I trust GOD that he knew our hearts and that goes towards our accounts.
Now, I/we know better and choose who we donate to.
Bottom line: just give and don't try to figure out the %.
Rocky is right on in my thinking with the verse, be cheerfull about it. If you ain't, then don't and find a place and amount that makes you cheerfull.