-77.85% is the change from 921 to 204
Calculation steps:
[( 204 - 921 ) ÷ 921] x 100 = -77.85%
Formula
Percentage change = [(204 - 921) / 921] x 100
Subtract the new number by the original number
204 - 921 = -717
-717 ÷ 921 = -0.7785016286644951
-0.7785016286644951 x 100 = -77.85%