-79.51% is the change from 488 to 100
Calculation steps:
[( 100 - 488 ) ÷ 488] x 100 = -79.51%
Formula
Percentage change = [(100 - 488) / 488] x 100
Subtract the new number by the original number
100 - 488 = -388
-388 ÷ 488 = -0.7950819672131147
-0.7950819672131147 x 100 = -79.51%