-96.77% is the change from 31 to 1
Calculation steps:
[( 1 - 31 ) ÷ 31] x 100 = -96.77%
Formula
Percentage change = [(1 - 31) / 31] x 100
Subtract the new number by the original number
1 - 31 = -30
-30 ÷ 31 = -0.967741935483871
-0.967741935483871 x 100 = -96.77%