-73.94% is the change from 921 to 240
Calculation steps:
[( 240 - 921 ) ÷ 921] x 100 = -73.94%
Formula
Percentage change = [(240 - 921) / 921] x 100
Subtract the new number by the original number
240 - 921 = -681
-681 ÷ 921 = -0.739413680781759
-0.739413680781759 x 100 = -73.94%