产品管理人收益比较图echarts 柱状配置项内容和展示

如何让柱状从0%开始生成

      option = {
							color: ['#367da2', '#dda42d'],
							title: {
								text: '产品管理人收益比较图',
								left: 'center',
								textStyle: {
									fontSize: 14,
									fontWeight: 'normal'
								}
							},
							tooltip: {
								show: true
							},
							legend: {
								top: 30,
								data: ['一个月', '一年'],
								itemWidth: 15,
								itemHeight: 15,
								itemGap: 80
							},
							xAxis: [{
								type: 'category',
								axisLine: {
									onZero: true
								},
								axisTick: {
									show: false
								},
								splitLine: {
								    show: true
								},
								data: ["桌若伟", "熊壮", "冉凌浩", "王洋", "邱炜", "彭敢"]
							}],
							yAxis: [{
								type: 'value',
								interval:1,
								min:-5,
								max:15,
								axisLabel: {
									show: false
								},
								axisLine: {
									show: false
								},
								axisTick: {
									show: false
								},
								splitLine: {
								    show: false
								}
							},{
								type: 'value',
								interval:80,
								min:-400,
								max:1200,
								axisLabel: {
									show: false
								},
								axisLine: {
									show: false
								},
								axisTick: {
									show: false
								},
								splitLine: {
								    lineStyle: {
								        type: 'dashed'
								    }
								}
							}],
							series: [
								{
									name: '一个月',
									type: 'bar',
									itemStyle: {
										normal: {
											borderRadius: 5,
											label: {
												formatter: function (obj) {
													return obj.value + "%";
												},
												position: 'top',
												show: true,
											}
										}
									},
									data: [0.83, 1.35, -1.94, 0.28, 0.06, 4.21]
								}, {
									name: '一年',
									type: 'bar',
									yAxisIndex:1,
									itemStyle: {
										normal: {
											borderRadius: 5,
											label: {
												formatter: function (obj) {
													return obj.value + "%";
												},
												position: 'top',
												show: true,
											}
										}
									},
									data: [528, 382, 756, 263, 29.7, 34]
								},
							]
						};