-98.06% is the change from 980 to 19
Calculation steps:
[( 19 - 980 ) ÷ 980] x 100 = -98.06%
Formula
Percentage change = [(19 - 980) / 980] x 100
Subtract the new number by the original number
19 - 980 = -961
-961 ÷ 980 = -0.9806122448979592
-0.9806122448979592 x 100 = -98.06%