1203.03% is the change from 66 to 860
Calculation steps:
[( 860 - 66 ) ÷ 66] x 100 = 1203.03%
Formula
Percentage change = [(860 - 66) / 66] x 100
Subtract the new number by the original number
860 - 66 = 794
794 ÷ 66 = 12.030303030303031
12.030303030303031 x 100 = 1203.03%