-86.68% is the change from 991 to 132
Calculation steps:
[( 132 - 991 ) ÷ 991] x 100 = -86.68%
Formula
Percentage change = [(132 - 991) / 991] x 100
Subtract the new number by the original number
132 - 991 = -859
-859 ÷ 991 = -0.8668012108980827
-0.8668012108980827 x 100 = -86.68%