29.79% is the change from 668 to 867
Calculation steps:
[( 867 - 668 ) ÷ 668] x 100 = 29.79%
Formula
Percentage change = [(867 - 668) / 668] x 100
Subtract the new number by the original number
867 - 668 = 199
199 ÷ 668 = 0.29790419161676646
0.29790419161676646 x 100 = 29.79%