-98.59% is the change from 920 to 13
Calculation steps:
[( 13 - 920 ) ÷ 920] x 100 = -98.59%
Formula
Percentage change = [(13 - 920) / 920] x 100
Subtract the new number by the original number
13 - 920 = -907
-907 ÷ 920 = -0.9858695652173913
-0.9858695652173913 x 100 = -98.59%