-85.27% is the change from 991 to 146
Calculation steps:
[( 146 - 991 ) ÷ 991] x 100 = -85.27%
Formula
Percentage change = [(146 - 991) / 991] x 100
Subtract the new number by the original number
146 - 991 = -845
-845 ÷ 991 = -0.8526740665993946
-0.8526740665993946 x 100 = -85.27%