80.6% is the change from 500 to 903
Calculation steps:
[( 903 - 500 ) ÷ 500] x 100 = 80.6%
Formula
Percentage change = [(903 - 500) / 500] x 100
Subtract the new number by the original number
903 - 500 = 403
403 ÷ 500 = 0.806
0.806 x 100 = 80.6%
Example