2.56% is the change from 858 to 880
Calculation steps:
[( 880 - 858 ) ÷ 858] x 100 = 2.56%
Formula
Percentage change = [(880 - 858) / 858] x 100
Subtract the new number by the original number
880 - 858 = 22
22 ÷ 858 = 0.02564102564102564
0.02564102564102564 x 100 = 2.56%