-38.83% is the change from 497 to 304
Calculation steps:
[( 304 - 497 ) ÷ 497] x 100 = -38.83%
Formula
Percentage change = [(304 - 497) / 497] x 100
Subtract the new number by the original number
304 - 497 = -193
-193 ÷ 497 = -0.38832997987927564
-0.38832997987927564 x 100 = -38.83%