I see that you and @jozef230 are off by only fractions of one cent, which is very little. This is due to the fact that the system itself will not allow a vote to be cast using a vote weight at a fraction of a percentage. So only whole numbers like 10%, or 51% can be used, not 51.678%, which is what would be needed in order to make both vote values match exactly. However, this causes the values to be off by only fractions of a percentage. It should be considered very negligible.