-98.06% is the change from 978 to 19
Calculation steps:
[( 19 - 978 ) ÷ 978] x 100 = -98.06%
Formula
Percentage change = [(19 - 978) / 978] x 100
Subtract the new number by the original number
19 - 978 = -959
-959 ÷ 978 = -0.9805725971370143
-0.9805725971370143 x 100 = -98.06%