-41.91% is the change from 921 to 535
Calculation steps:
[( 535 - 921 ) ÷ 921] x 100 = -41.91%
Formula
Percentage change = [(535 - 921) / 921] x 100
Subtract the new number by the original number
535 - 921 = -386
-386 ÷ 921 = -0.4191096634093377
-0.4191096634093377 x 100 = -41.91%