-97.9% is the change from 904 to 19
Calculation steps:
[( 19 - 904 ) ÷ 904] x 100 = -97.9%
Formula
Percentage change = [(19 - 904) / 904] x 100
Subtract the new number by the original number
19 - 904 = -885
-885 ÷ 904 = -0.9789823008849557
-0.9789823008849557 x 100 = -97.9%