-92.31% is the change from 13 to 1
Calculation steps:
[( 1 - 13 ) ÷ 13] x 100 = -92.31%
Formula
Percentage change = [(1 - 13) / 13] x 100
Subtract the new number by the original number
1 - 13 = -12
-12 ÷ 13 = -0.9230769230769231
-0.9230769230769231 x 100 = -92.31%