-36.02% is the change from 497 to 318
Calculation steps:
[( 318 - 497 ) ÷ 497] x 100 = -36.02%
Formula
Percentage change = [(318 - 497) / 497] x 100
Subtract the new number by the original number
318 - 497 = -179
-179 ÷ 497 = -0.36016096579476864
-0.36016096579476864 x 100 = -36.02%