-39.96% is the change from 921 to 553
Calculation steps:
[( 553 - 921 ) ÷ 921] x 100 = -39.96%
Formula
Percentage change = [(553 - 921) / 921] x 100
Subtract the new number by the original number
553 - 921 = -368
-368 ÷ 921 = -0.3995656894679696
-0.3995656894679696 x 100 = -39.96%