-36.62% is the change from 497 to 315
Calculation steps:
[( 315 - 497 ) ÷ 497] x 100 = -36.62%
Formula
Percentage change = [(315 - 497) / 497] x 100
Subtract the new number by the original number
315 - 497 = -182
-182 ÷ 497 = -0.36619718309859156
-0.36619718309859156 x 100 = -36.62%