One could call this a significant drop.

"The latest statistics from the European Commission reveal that Cambridge University, which netted €483m (£433m) over the seven years of the last European research funding programme, Horizon 2020, has not received any funding in the first two years of the new Horizon Europe programme.

Meanwhile, Oxford, which won €523m from the earlier programme, has only been awarded €2m to date from Horizon Europe."

https://www.theguardian.com/education/2023/feb/04/brexit-causes-collapse-in-european-research-funding-for-oxbridge-universities?CMP=Share_iOSApp_Other