Hi.
If you need to make a change to your rates, then you can go to Rooms/Rates -> Change Multiple Rates - where you can amend your rates by a fixed amount, or a percentage.
I'm sure you already know the percentage, but if you enter a percentage change of -97.8723404255319 - that will reduce the VAT from 17.5% to 15% overall:
You may be better amending manually however, as doing it as above, would result in your rates being amended to include pennies - where you would, I suspect, many of you would like them rounded to a whole number.
As always, if you have any suggestions for improving Easy Bookings, please let us know.