-40.83% is the change from 921 to 545
Calculation steps:
[( 545 - 921 ) ÷ 921] x 100 = -40.83%
Formula
Percentage change = [(545 - 921) / 921] x 100
Subtract the new number by the original number
545 - 921 = -376
-376 ÷ 921 = -0.40825190010857765
-0.40825190010857765 x 100 = -40.83%