-98.68% is the change from 988 to 13
Calculation steps:
[( 13 - 988 ) ÷ 988] x 100 = -98.68%
Formula
Percentage change = [(13 - 988) / 988] x 100
Subtract the new number by the original number
13 - 988 = -975
-975 ÷ 988 = -0.9868421052631579
-0.9868421052631579 x 100 = -98.68%