-97.97% is the change from 493 to 10
Calculation steps:
[( 10 - 493 ) ÷ 493] x 100 = -97.97%
Formula
Percentage change = [(10 - 493) / 493] x 100
Subtract the new number by the original number
10 - 493 = -483
-483 ÷ 493 = -0.9797160243407708
-0.9797160243407708 x 100 = -97.97%