@Zim-Xero Actually, here I wasn't saying give flat instead of percentage, and, actually, I was suggesting to change nothing but how the info is worded. That is still percentage, just that "Giving RomanRepublic 150% income for 10 PUs" definitely reads like the 150% income is total 10 PUs.
Tho probably it would be better reading as:
Giving RomanRepublic +50% income for +10 PUs; end with 30 PUs