-38.04% is the change from 999 to 619
Calculation steps:
[( 619 - 999 ) ÷ 999] x 100 = -38.04%
Formula
Percentage change = [(619 - 999) / 999] x 100
Subtract the new number by the original number
619 - 999 = -380
-380 ÷ 999 = -0.38038038038038036
-0.38038038038038036 x 100 = -38.04%