2.39% is the change from 878 to 899
Calculation steps:
[( 899 - 878 ) ÷ 878] x 100 = 2.39%
Formula
Percentage change = [(899 - 878) / 878] x 100
Subtract the new number by the original number
899 - 878 = 21
21 ÷ 878 = 0.023917995444191344
0.023917995444191344 x 100 = 2.39%