Want to know why GBPUSD is going downwards today?

Based on the last 12 ISM Manufacturing PMI events in United States, we expect a $460 movement on GBPUSD within 4 hours following the event release at 02 Dec 02:00. We expect GBPUSD to trend downwards 4 hours following the event release at 02 Dec 02:00 if the released value is < 61 Historical events that allowed us to draw this conclusion

03 Aug 00:00
02 Jul 00:00
04 May 00:00
02 Feb 02:00

All references to movement sizes are expressed assuming a lot size of 100,000 units (“standard account”).