-70.63% is the change from 143 to 42
Calculation steps:
[( 42 - 143 ) ÷ 143] x 100 = -70.63%
Formula
Percentage change = [(42 - 143) / 143] x 100
Subtract the new number by the original number
42 - 143 = -101
-101 ÷ 143 = -0.7062937062937062
-0.7062937062937062 x 100 = -70.63%