-97.83% is the change from 921 to 20
Calculation steps:
[( 20 - 921 ) ÷ 921] x 100 = -97.83%
Formula
Percentage change = [(20 - 921) / 921] x 100
Subtract the new number by the original number
20 - 921 = -901
-901 ÷ 921 = -0.9782844733984799
-0.9782844733984799 x 100 = -97.83%