-3.03% is the change from 991 to 961
Calculation steps:
[( 961 - 991 ) ÷ 991] x 100 = -3.03%
Formula
Percentage change = [(961 - 991) / 991] x 100
Subtract the new number by the original number
961 - 991 = -30
-30 ÷ 991 = -0.030272452068617558
-0.030272452068617558 x 100 = -3.03%