/**
 * @public
 */
export interface ChangeStatistic {
    /**
     * The ratio of change from one duration to another, expressed as: (newSum - oldSum) / oldSum
     * If a ratio cannot be calculated - such as when a new or old sum is zero,
     * the ratio can be omitted and where applicable, ∞ or -∞ will display based on amount.
     */
    ratio?: number;
    /**
     * The actual USD change between time periods (can be negative if costs decreased)
     */
    amount: number;
}