5.21% is the change from 864 to 909
Calculation steps:
[( 909 - 864 ) ÷ 864] x 100 = 5.21%
Formula
Percentage change = [(909 - 864) / 864] x 100
Subtract the new number by the original number
909 - 864 = 45
45 ÷ 864 = 0.052083333333333336
0.052083333333333336 x 100 = 5.21%