-36.22% is the change from 497 to 317
Calculation steps:
[( 317 - 497 ) ÷ 497] x 100 = -36.22%
Formula
Percentage change = [(317 - 497) / 497] x 100
Subtract the new number by the original number
317 - 497 = -180
-180 ÷ 497 = -0.36217303822937624
-0.36217303822937624 x 100 = -36.22%