-80.93% is the change from 991 to 189
Calculation steps:
[( 189 - 991 ) ÷ 991] x 100 = -80.93%
Formula
Percentage change = [(189 - 991) / 991] x 100
Subtract the new number by the original number
189 - 991 = -802
-802 ÷ 991 = -0.8092835519677094
-0.8092835519677094 x 100 = -80.93%