def progress(i, n, i0=0):
	def _progress(i,n,i0):
		return 100*(i+1-i0)//(n-i0)

	if n<i0:
		i*=-1
		n*=-1
		i0*=-1
	assert i0<=i<n, (i0,i,n)
	percentage=_progress(i,n,i0)
	print("{0}%".format(percentage),end="\r")