1198.48% is the change from 66 to 857
Calculation steps:
[( 857 - 66 ) ÷ 66] x 100 = 1198.48%
Formula
Percentage change = [(857 - 66) / 66] x 100
Subtract the new number by the original number
857 - 66 = 791
791 ÷ 66 = 11.984848484848484
11.984848484848484 x 100 = 1198.48%