71.83% is the change from 504 to 866
Calculation steps:
[( 866 - 504 ) ÷ 504] x 100 = 71.83%
Formula
Percentage change = [(866 - 504) / 504] x 100
Subtract the new number by the original number
866 - 504 = 362
362 ÷ 504 = 0.7182539682539683
0.7182539682539683 x 100 = 71.83%