-90.17% is the change from 987 to 97
Calculation steps:
[( 97 - 987 ) ÷ 987] x 100 = -90.17%
Formula
Percentage change = [(97 - 987) / 987] x 100
Subtract the new number by the original number
97 - 987 = -890
-890 ÷ 987 = -0.9017223910840932
-0.9017223910840932 x 100 = -90.17%