-39.03% is the change from 497 to 303
Calculation steps:
[( 303 - 497 ) ÷ 497] x 100 = -39.03%
Formula
Percentage change = [(303 - 497) / 497] x 100
Subtract the new number by the original number
303 - 497 = -194
-194 ÷ 497 = -0.3903420523138833
-0.3903420523138833 x 100 = -39.03%