-75.03% is the change from 921 to 230
Calculation steps:
[( 230 - 921 ) ÷ 921] x 100 = -75.03%
Formula
Percentage change = [(230 - 921) / 921] x 100
Subtract the new number by the original number
230 - 921 = -691
-691 ÷ 921 = -0.750271444082519
-0.750271444082519 x 100 = -75.03%