-19.47% is the change from 488 to 393
Calculation steps:
[( 393 - 488 ) ÷ 488] x 100 = -19.47%
Formula
Percentage change = [(393 - 488) / 488] x 100
Subtract the new number by the original number
393 - 488 = -95
-95 ÷ 488 = -0.19467213114754098
-0.19467213114754098 x 100 = -19.47%