-95.95% is the change from 494 to 20
Calculation steps:
[( 20 - 494 ) ÷ 494] x 100 = -95.95%
Formula
Percentage change = [(20 - 494) / 494] x 100
Subtract the new number by the original number
20 - 494 = -474
-474 ÷ 494 = -0.9595141700404858
-0.9595141700404858 x 100 = -95.95%