-98.6% is the change from 927 to 13
Calculation steps:
[( 13 - 927 ) ÷ 927] x 100 = -98.6%
Formula
Percentage change = [(13 - 927) / 927] x 100
Subtract the new number by the original number
13 - 927 = -914
-914 ÷ 927 = -0.9859762675296656
-0.9859762675296656 x 100 = -98.6%