1413.64% is the change from 66 to 999
Calculation steps:
[( 999 - 66 ) ÷ 66] x 100 = 1413.64%
Formula
Percentage change = [(999 - 66) / 66] x 100
Subtract the new number by the original number
999 - 66 = 933
933 ÷ 66 = 14.136363636363637
14.136363636363637 x 100 = 1413.64%