-53.85% is the change from 143 to 66
Calculation steps:
[( 66 - 143 ) ÷ 143] x 100 = -53.85%
Formula
Percentage change = [(66 - 143) / 143] x 100
Subtract the new number by the original number
66 - 143 = -77
-77 ÷ 143 = -0.5384615384615384
-0.5384615384615384 x 100 = -53.85%