def _pretty_multiplier(x: float) -> str:
    """Make a prettier version of a multiplier value

    Args:
        x: Value for a multiplicative factor (e.g., b = x * a)
    Returns:
        A humanized version of it
    """
    if x > 100:
        return f'{x:.0f}x'
    elif x > 2:
        return f'{x:.1f}x'
    return f'{(x-1)*100:.1f}%'