-82.64% is the change from 242 to 42
Calculation steps:
[( 42 - 242 ) ÷ 242] x 100 = -82.64%
Formula
Percentage change = [(42 - 242) / 242] x 100
Subtract the new number by the original number
42 - 242 = -200
-200 ÷ 242 = -0.8264462809917356
-0.8264462809917356 x 100 = -82.64%