-80.42% is the change from 143 to 28
Calculation steps:
[( 28 - 143 ) ÷ 143] x 100 = -80.42%
Formula
Percentage change = [(28 - 143) / 143] x 100
Subtract the new number by the original number
28 - 143 = -115
-115 ÷ 143 = -0.8041958041958042
-0.8041958041958042 x 100 = -80.42%