-73.86% is the change from 991 to 259
Calculation steps:
[( 259 - 991 ) ÷ 991] x 100 = -73.86%
Formula
Percentage change = [(259 - 991) / 991] x 100
Subtract the new number by the original number
259 - 991 = -732
-732 ÷ 991 = -0.7386478304742684
-0.7386478304742684 x 100 = -73.86%