-90.18% is the change from 988 to 97
Calculation steps:
[( 97 - 988 ) ÷ 988] x 100 = -90.18%
Formula
Percentage change = [(97 - 988) / 988] x 100
Subtract the new number by the original number
97 - 988 = -891
-891 ÷ 988 = -0.9018218623481782
-0.9018218623481782 x 100 = -90.18%