-41.04% is the change from 921 to 543
Calculation steps:
[( 543 - 921 ) ÷ 921] x 100 = -41.04%
Formula
Percentage change = [(543 - 921) / 921] x 100
Subtract the new number by the original number
543 - 921 = -378
-378 ÷ 921 = -0.41042345276872966
-0.41042345276872966 x 100 = -41.04%