-91.1% is the change from 1000 to 89
Calculation steps:
[( 89 - 1000 ) ÷ 1000] x 100 = -91.1%
Formula
Percentage change = [(89 - 1000) / 1000] x 100
Subtract the new number by the original number
89 - 1000 = -911
-911 ÷ 1000 = -0.911
-0.911 x 100 = -91.1%