-93.85% is the change from 488 to 30
Calculation steps:
[( 30 - 488 ) ÷ 488] x 100 = -93.85%
Formula
Percentage change = [(30 - 488) / 488] x 100
Subtract the new number by the original number
30 - 488 = -458
-458 ÷ 488 = -0.9385245901639344
-0.9385245901639344 x 100 = -93.85%