3.53% is the change from 878 to 909
Calculation steps:
[( 909 - 878 ) ÷ 878] x 100 = 3.53%
Formula
Percentage change = [(909 - 878) / 878] x 100
Subtract the new number by the original number
909 - 878 = 31
31 ÷ 878 = 0.03530751708428246
0.03530751708428246 x 100 = 3.53%