-91.61% is the change from 143 to 12
Calculation steps:
[( 12 - 143 ) ÷ 143] x 100 = -91.61%
Formula
Percentage change = [(12 - 143) / 143] x 100
Subtract the new number by the original number
12 - 143 = -131
-131 ÷ 143 = -0.916083916083916
-0.916083916083916 x 100 = -91.61%