1131.82% is the change from 66 to 813
Calculation steps:
[( 813 - 66 ) ÷ 66] x 100 = 1131.82%
Formula
Percentage change = [(813 - 66) / 66] x 100
Subtract the new number by the original number
813 - 66 = 747
747 ÷ 66 = 11.318181818181818
11.318181818181818 x 100 = 1131.82%