-85.57% is the change from 991 to 143
Calculation steps:
[( 143 - 991 ) ÷ 991] x 100 = -85.57%
Formula
Percentage change = [(143 - 991) / 991] x 100
Subtract the new number by the original number
143 - 991 = -848
-848 ÷ 991 = -0.8557013118062563
-0.8557013118062563 x 100 = -85.57%