60.71% is the change from 504 to 810
Calculation steps:
[( 810 - 504 ) ÷ 504] x 100 = 60.71%
Formula
Percentage change = [(810 - 504) / 504] x 100
Subtract the new number by the original number
810 - 504 = 306
306 ÷ 504 = 0.6071428571428571
0.6071428571428571 x 100 = 60.71%