-99.9% is the change from 974 to 1
Calculation steps:
[( 1 - 974 ) ÷ 974] x 100 = -99.9%
Formula
Percentage change = [(1 - 974) / 974] x 100
Subtract the new number by the original number
1 - 974 = -973
-973 ÷ 974 = -0.9989733059548255
-0.9989733059548255 x 100 = -99.9%