57.96% is the change from 509 to 804
Calculation steps:
[( 804 - 509 ) ÷ 509] x 100 = 57.96%
Formula
Percentage change = [(804 - 509) / 509] x 100
Subtract the new number by the original number
804 - 509 = 295
295 ÷ 509 = 0.5795677799607073
0.5795677799607073 x 100 = 57.96%