what time has the highest w% in a single season

The Milwaukee Brewers have the highest winning percentage by a team, winning 66.7 percent of the time.

	TEAM	W%	SEAS	W	L	G	AB	R	H	2B	3B	HR	RBI	BB	HBP	SO	SB	CS	PA	TB	XBH	SH	SF	IBB	GIDP	AVG	OBP	SLG	OPS
1	Brewers	.667	1	8	4	12	395	53	88	25	0	0		20		70			415	113	25					.223		.286
2	Reds	.659	2	174	90	269	9,515	2,020	2,647	386	176	106	1,548	1,303	109	499	859		10,927	3,703	668					.278	.371	.389	.761
3	Outlaw Reds	.657	1	69	36	105	3,786	703	1,027	118	63	26		147		482			3,933	1,349	207					.271		.356
4	Browns	.644	10	781	432	1,233	43,777	7,933	11,555	1,658	602	304	4,657	3,473	353	436	2,307		47,743	15,329	2,564					.264	.325	.350	.675
5	Dark Blues	.619	2	78	48	129	5,022	770	1,348	159	53	6		69					5,091	1,631	218					.268		.325
6	Grays	.612	8	438	278	725	26,572	4,037	6,764	1,084	341	98	292	1,192					27,764	8,824	1,523					.255		.332
7	Brown Stockings	.589	2	73	51	124	4,656	670	1,173	124	63	3		116					4,772	1,432	190					.252		.308
8	Brewers	.583	1	21	15	36	1,271	227	332	58	15	13	165	107	29	114	47		1,407	459	86					.261	.333	.361	.694
9	Orioles	.579	10	730	530	1,294	45,361	8,530	13,521	1,814	865	218	6,940	4,345	992	2,952	2,993		51,317	17,719	2,897	619				.298	.372	.391	.763
10	Ward's Wonders	.576	1	76	56	133	4,887	964	1,352	186	93	34	748	502	42	369	272		5,431	1,826	313					.277	.349	.374	.723
11	Yankees	.569	123	10,842	8,204	19,134	652,112	92,978	173,071	28,745	5,505	17,431	86,403	68,857	4,947	95,463	11,705	2,815	738,820	265,119	51,681	9,600	3,304	2,859	10,731	.265	.339	.407	.745
12	Whales	.565	2	173	133	312	10,231	1,262	2,634	412	127	102	1,102	964	71	1,200	332		11,614	3,606	641	348				.257	.326	.352	.678
13	Giants	.565	1	74	57	132	4,913	1,018	1,393	204	97	66	793	486	31	364	231		5,430	1,989	367					.284	.352	.405	.757
14	Monumentals	.552	1	58	47	106	3,883	662	952	150	26	17		144		652			4,027	1,205	193					.245		.310
15	Peppers	.551	2	168	137	312	10,273	1,347	2,757	440	170	50	1,116	908	72	1,160	457		11,678	3,687	660	425				.268	.332	.359	.691
16	Pirates	.547	1	75	62	138	4,968	886	1,311	200	95	31	705	492	43	410	276		5,503	1,794	326					.264	.335	.361	.697
17	Giants	.535	143	11,600	10,080	21,843	745,409	100,941	195,992	31,454	7,052	15,651	90,403	68,543	5,711	100,191	16,543	3,151	834,380	288,503	54,157	11,680	3,037	4,023	10,234	.263	.328	.387	.716
18	Reds	.532	1	58	51	111	3,940	636	928	168	32	19		128		787			4,068	1,217	219					.236		.309
19	Dodgers	.532	142	11,500	10,120	21,759	741,401	98,265	193,681	31,171	7,012	14,234	88,475	69,166	5,176	100,972	17,381	3,561	831,679	281,578	52,417	12,778	3,082	3,751	9,989	.261	.327	.380	.707
20	Athletics	.529	10	633	564	1,219	43,556	7,481	11,208	1,782	741	284	4,168	3,158	351	548	1,900		47,191	15,324	2,807					.257	.315	.352	.666
21	Athletics	.519	1	68	63	132	4,855	941	1,350	187	113	49	761	431	51	321	203		5,337	1,910	349					.278	.343	.393	.737
22	Red Sox	.518	125	10,021	9,318	19,422	664,720	90,745	177,343	33,279	5,612	14,692	84,165	67,038	4,842	96,203	9,687	2,568	750,560	265,922	53,583	10,601	3,359	3,007	11,592	.267	.337	.400	.737
23	Grays	.516	2	65	61	130	4,925	619	1,300	143	50	15		82					5,007	1,588	208					.264		.322
24	Maumees	.515	1	68	64	134	4,575	739	1,152	152	108	24	512	486	71		421		5,132	1,592	284					.252	.333	.348	.681
25	Cardinals	.513	134	10,566	10,030	20,727	708,918	92,705	188,333	31,945	7,052	12,928	84,755	64,398	5,236	98,727	15,053	3,622	793,694	273,166	51,925	11,984	3,158	3,780	10,185	.266	.330	.385	.715