80.08% is the change from 502 to 904
Calculation steps:
[( 904 - 502 ) ÷ 502] x 100 = 80.08%
Formula
Percentage change = [(904 - 502) / 502] x 100
Subtract the new number by the original number
904 - 502 = 402
402 ÷ 502 = 0.8007968127490039
0.8007968127490039 x 100 = 80.08%