-95.94% is the change from 493 to 20
Calculation steps:
[( 20 - 493 ) ÷ 493] x 100 = -95.94%
Formula
Percentage change = [(20 - 493) / 493] x 100
Subtract the new number by the original number
20 - 493 = -473
-473 ÷ 493 = -0.9594320486815415
-0.9594320486815415 x 100 = -95.94%