-63.3% is the change from 921 to 338
Calculation steps:
[( 338 - 921 ) ÷ 921] x 100 = -63.3%
Formula
Percentage change = [(338 - 921) / 921] x 100
Subtract the new number by the original number
338 - 921 = -583
-583 ÷ 921 = -0.6330076004343105
-0.6330076004343105 x 100 = -63.3%