65.48% is the change from 504 to 834
Calculation steps:
[( 834 - 504 ) ÷ 504] x 100 = 65.48%
Formula
Percentage change = [(834 - 504) / 504] x 100
Subtract the new number by the original number
834 - 504 = 330
330 ÷ 504 = 0.6547619047619048
0.6547619047619048 x 100 = 65.48%