-90.3% is the change from 1000 to 97
Calculation steps:
[( 97 - 1000 ) ÷ 1000] x 100 = -90.3%
Formula
Percentage change = [(97 - 1000) / 1000] x 100
Subtract the new number by the original number
97 - 1000 = -903
-903 ÷ 1000 = -0.903
-0.903 x 100 = -90.3%