let nPos = 300.239235,
    nNeg = -300.239235;

~~(nPos * 100) / 100; // 300.23
~~(nNeg * 100) / 100; // -300.23

Math.trunc(nPos * 100) / 100; // 300.23
Math.trunc(nNeg * 100) / 100; // -300.23

Исходя из официальной документации - Sublime - Preferences - Package Settings - Bracket Settings User - Приложенный код - Ctrl + C - Ctrl + V - Ctrl + S - Profit. Мне помогло.

{
    "bracket_styles": {
        "curly": {
            "icon": "curly_bracket",
            "style": "outline"
        },
        "round": {
            "icon": "round_bracket",
            "style": "outline"
        },
        "square": {
            "icon": "square_bracket",
            "style": "outline"
        },
        "angle": {
            "icon": "angle_bracket",
            "style": "outline"
        },
        "tag": {
            "icon": "tag",
            "style": "outline",
        },
        "c_define": {
            "icon": "hash",
            "style": "outline"
        },
        "single_quote": {
            "icon": "single_quote",
            "style": "outline"
        },
        "double_quote": {
            "icon": "double_quote",
            "style": "outline"
        },
        "regex": {
            "icon": "regex",
            "style": "outline"
        }
    }
}

Можно еще добавить в начало "high_visibility_enabled_by_default": true,, но это на любителя.

{
    "high_visibility_enabled_by_default": true,
    "bracket_styles": {
        "curly": {
            "icon": "curly_bracket",
            "style": "outline"
        },
        "round": {
            "icon": "round_bracket",
            "style": "outline"
        },
        "square": {
            "icon": "square_bracket",
            "style": "outline"
        },
        "angle": {
            "icon": "angle_bracket",
            "style": "outline"
        },
        "tag": {
            "icon": "tag",
            "style": "outline",
        },
        "c_define": {
            "icon": "hash",
            "style": "outline"
        },
        "single_quote": {
            "icon": "single_quote",
            "style": "outline"
        },
        "double_quote": {
            "icon": "double_quote",
            "style": "outline"
        },
        "regex": {
            "icon": "regex",
            "style": "outline"
        }
    }
}