-54.63% is the change from 928 to 421
Calculation steps:
[( 421 - 928 ) ÷ 928] x 100 = -54.63%
Formula
Percentage change = [(421 - 928) / 928] x 100
Subtract the new number by the original number
421 - 928 = -507
-507 ÷ 928 = -0.5463362068965517
-0.5463362068965517 x 100 = -54.63%