-93.65% is the change from 488 to 31
Calculation steps:
[( 31 - 488 ) ÷ 488] x 100 = -93.65%
Formula
Percentage change = [(31 - 488) / 488] x 100
Subtract the new number by the original number
31 - 488 = -457
-457 ÷ 488 = -0.9364754098360656
-0.9364754098360656 x 100 = -93.65%