-99.67% is the change from 921 to 3
Calculation steps:
[( 3 - 921 ) ÷ 921] x 100 = -99.67%
Formula
Percentage change = [(3 - 921) / 921] x 100
Subtract the new number by the original number
3 - 921 = -918
-918 ÷ 921 = -0.996742671009772
-0.996742671009772 x 100 = -99.67%