29.28% is the change from 666 to 861
Calculation steps:
[( 861 - 666 ) ÷ 666] x 100 = 29.28%
Formula
Percentage change = [(861 - 666) / 666] x 100
Subtract the new number by the original number
861 - 666 = 195
195 ÷ 666 = 0.2927927927927928
0.2927927927927928 x 100 = 29.28%