2.39% is the change from 879 to 900
Calculation steps:
[( 900 - 879 ) ÷ 879] x 100 = 2.39%
Formula
Percentage change = [(900 - 879) / 879] x 100
Subtract the new number by the original number
900 - 879 = 21
21 ÷ 879 = 0.023890784982935155
0.023890784982935155 x 100 = 2.39%