-40.93% is the change from 921 to 544
Calculation steps:
[( 544 - 921 ) ÷ 921] x 100 = -40.93%
Formula
Percentage change = [(544 - 921) / 921] x 100
Subtract the new number by the original number
544 - 921 = -377
-377 ÷ 921 = -0.40933767643865365
-0.40933767643865365 x 100 = -40.93%