-99.89% is the change from 931 to 1
Calculation steps:
[( 1 - 931 ) ÷ 931] x 100 = -99.89%
Formula
Percentage change = [(1 - 931) / 931] x 100
Subtract the new number by the original number
1 - 931 = -930
-930 ÷ 931 = -0.9989258861439313
-0.9989258861439313 x 100 = -99.89%