-97.62% is the change from 799 to 19
Calculation steps:
[( 19 - 799 ) ÷ 799] x 100 = -97.62%
Formula
Percentage change = [(19 - 799) / 799] x 100
Subtract the new number by the original number
19 - 799 = -780
-780 ÷ 799 = -0.9762202753441802
-0.9762202753441802 x 100 = -97.62%