-91.09% is the change from 988 to 88
Calculation steps:
[( 88 - 988 ) ÷ 988] x 100 = -91.09%
Formula
Percentage change = [(88 - 988) / 988] x 100
Subtract the new number by the original number
88 - 988 = -900
-900 ÷ 988 = -0.9109311740890689
-0.9109311740890689 x 100 = -91.09%