52.35% is the change from 531 to 809
Calculation steps:
[( 809 - 531 ) ÷ 531] x 100 = 52.35%
Formula
Percentage change = [(809 - 531) / 531] x 100
Subtract the new number by the original number
809 - 531 = 278
278 ÷ 531 = 0.5235404896421846
0.5235404896421846 x 100 = 52.35%