-73.16% is the change from 991 to 266
Calculation steps:
[( 266 - 991 ) ÷ 991] x 100 = -73.16%
Formula
Percentage change = [(266 - 991) / 991] x 100
Subtract the new number by the original number
266 - 991 = -725
-725 ÷ 991 = -0.7315842583249244
-0.7315842583249244 x 100 = -73.16%