503.73% is the change from 134 to 809
Calculation steps:
[( 809 - 134 ) ÷ 134] x 100 = 503.73%
Formula
Percentage change = [(809 - 134) / 134] x 100
Subtract the new number by the original number
809 - 134 = 675
675 ÷ 134 = 5.037313432835821
5.037313432835821 x 100 = 503.73%