-38.49% is the change from 808 to 497
Calculation steps:
[( 497 - 808 ) ÷ 808] x 100 = -38.49%
Formula
Percentage change = [(497 - 808) / 808] x 100
Subtract the new number by the original number
497 - 808 = -311
-311 ÷ 808 = -0.3849009900990099
-0.3849009900990099 x 100 = -38.49%