-64.5% is the change from 921 to 327
Calculation steps:
[( 327 - 921 ) ÷ 921] x 100 = -64.5%
Formula
Percentage change = [(327 - 921) / 921] x 100
Subtract the new number by the original number
327 - 921 = -594
-594 ÷ 921 = -0.6449511400651465
-0.6449511400651465 x 100 = -64.5%