-99.8% is the change from 978 to 2
Calculation steps:
[( 2 - 978 ) ÷ 978] x 100 = -99.8%
Formula
Percentage change = [(2 - 978) / 978] x 100
Subtract the new number by the original number
2 - 978 = -976
-976 ÷ 978 = -0.9979550102249489
-0.9979550102249489 x 100 = -99.8%