-50.82% is the change from 488 to 240
Calculation steps:
[( 240 - 488 ) ÷ 488] x 100 = -50.82%
Formula
Percentage change = [(240 - 488) / 488] x 100
Subtract the new number by the original number
240 - 488 = -248
-248 ÷ 488 = -0.5081967213114754
-0.5081967213114754 x 100 = -50.82%