-99.89% is the change from 939 to 1
Calculation steps:
[( 1 - 939 ) ÷ 939] x 100 = -99.89%
Formula
Percentage change = [(1 - 939) / 939] x 100
Subtract the new number by the original number
1 - 939 = -938
-938 ÷ 939 = -0.9989350372736954
-0.9989350372736954 x 100 = -99.89%