-39.31% is the change from 921 to 559
Calculation steps:
[( 559 - 921 ) ÷ 921] x 100 = -39.31%
Formula
Percentage change = [(559 - 921) / 921] x 100
Subtract the new number by the original number
559 - 921 = -362
-362 ÷ 921 = -0.3930510314875136
-0.3930510314875136 x 100 = -39.31%