-64.82% is the change from 921 to 324
Calculation steps:
[( 324 - 921 ) ÷ 921] x 100 = -64.82%
Formula
Percentage change = [(324 - 921) / 921] x 100
Subtract the new number by the original number
324 - 921 = -597
-597 ÷ 921 = -0.6482084690553745
-0.6482084690553745 x 100 = -64.82%