-34.84% is the change from 488 to 318
Calculation steps:
[( 318 - 488 ) ÷ 488] x 100 = -34.84%
Formula
Percentage change = [(318 - 488) / 488] x 100
Subtract the new number by the original number
318 - 488 = -170
-170 ÷ 488 = -0.3483606557377049
-0.3483606557377049 x 100 = -34.84%