19.82% is the change from 666 to 798
Calculation steps:
[( 798 - 666 ) ÷ 666] x 100 = 19.82%
Formula
Percentage change = [(798 - 666) / 666] x 100
Subtract the new number by the original number
798 - 666 = 132
132 ÷ 666 = 0.1981981981981982
0.1981981981981982 x 100 = 19.82%