-88.38% is the change from 990 to 115
Calculation steps:
[( 115 - 990 ) ÷ 990] x 100 = -88.38%
Formula
Percentage change = [(115 - 990) / 990] x 100
Subtract the new number by the original number
115 - 990 = -875
-875 ÷ 990 = -0.8838383838383839
-0.8838383838383839 x 100 = -88.38%