73.9% is the change from 502 to 873
Calculation steps:
[( 873 - 502 ) ÷ 502] x 100 = 73.9%
Formula
Percentage change = [(873 - 502) / 502] x 100
Subtract the new number by the original number
873 - 502 = 371
371 ÷ 502 = 0.7390438247011952
0.7390438247011952 x 100 = 73.9%