-54.44% is the change from 924 to 421
Calculation steps:
[( 421 - 924 ) ÷ 924] x 100 = -54.44%
Formula
Percentage change = [(421 - 924) / 924] x 100
Subtract the new number by the original number
421 - 924 = -503
-503 ÷ 924 = -0.5443722943722944
-0.5443722943722944 x 100 = -54.44%