-63.74% is the change from 921 to 334
Calculation steps:
[( 334 - 921 ) ÷ 921] x 100 = -63.74%
Formula
Percentage change = [(334 - 921) / 921] x 100
Subtract the new number by the original number
334 - 921 = -587
-587 ÷ 921 = -0.6373507057546145
-0.6373507057546145 x 100 = -63.74%