-10.49% is the change from 143 to 128
Calculation steps:
[( 128 - 143 ) ÷ 143] x 100 = -10.49%
Formula
Percentage change = [(128 - 143) / 143] x 100
Subtract the new number by the original number
128 - 143 = -15
-15 ÷ 143 = -0.1048951048951049
-0.1048951048951049 x 100 = -10.49%