-37.74% is the change from 999 to 622
Calculation steps:
[( 622 - 999 ) ÷ 999] x 100 = -37.74%
Formula
Percentage change = [(622 - 999) / 999] x 100
Subtract the new number by the original number
622 - 999 = -377
-377 ÷ 999 = -0.37737737737737737
-0.37737737737737737 x 100 = -37.74%