1163.64% is the change from 66 to 834
Calculation steps:
[( 834 - 66 ) ÷ 66] x 100 = 1163.64%
Formula
Percentage change = [(834 - 66) / 66] x 100
Subtract the new number by the original number
834 - 66 = 768
768 ÷ 66 = 11.636363636363637
11.636363636363637 x 100 = 1163.64%