-97.62% is the change from 798 to 19
Calculation steps:
[( 19 - 798 ) ÷ 798] x 100 = -97.62%
Formula
Percentage change = [(19 - 798) / 798] x 100
Subtract the new number by the original number
19 - 798 = -779
-779 ÷ 798 = -0.9761904761904762
-0.9761904761904762 x 100 = -97.62%