28.44% is the change from 668 to 858
Calculation steps:
[( 858 - 668 ) ÷ 668] x 100 = 28.44%
Formula
Percentage change = [(858 - 668) / 668] x 100
Subtract the new number by the original number
858 - 668 = 190
190 ÷ 668 = 0.2844311377245509
0.2844311377245509 x 100 = 28.44%