-93.79% is the change from 322 to 20
Calculation steps:
[( 20 - 322 ) ÷ 322] x 100 = -93.79%
Formula
Percentage change = [(20 - 322) / 322] x 100
Subtract the new number by the original number
20 - 322 = -302
-302 ÷ 322 = -0.937888198757764
-0.937888198757764 x 100 = -93.79%