28.23% is the change from 666 to 854
Calculation steps:
[( 854 - 666 ) ÷ 666] x 100 = 28.23%
Formula
Percentage change = [(854 - 666) / 666] x 100
Subtract the new number by the original number
854 - 666 = 188
188 ÷ 666 = 0.2822822822822823
0.2822822822822823 x 100 = 28.23%