Oil prices fell by more than 3 per cent in volatile trade on Tuesday on fears of higher US supply amid an economic slowdown and lower Chinese fuel demand. Brent crude futures fell by $2.37, or 3.6pc, to $89.25 a barrel by 12:29 p.m. EDT (1629 GMT). US West Texas Intermediate (WTI) crude futures were down $3.12, or 3.7pc, at $82.34, having risen by over $1 earlier in the session. China, th