27.4% is the change from 668 to 851
Calculation steps:
[( 851 - 668 ) ÷ 668] x 100 = 27.4%
Formula
Percentage change = [(851 - 668) / 668] x 100
Subtract the new number by the original number
851 - 668 = 183
183 ÷ 668 = 0.27395209580838326
0.27395209580838326 x 100 = 27.4%