499.26% is the change from 135 to 809
Calculation steps:
[( 809 - 135 ) ÷ 135] x 100 = 499.26%
Formula
Percentage change = [(809 - 135) / 135] x 100
Subtract the new number by the original number
809 - 135 = 674
674 ÷ 135 = 4.992592592592593
4.992592592592593 x 100 = 499.26%