-32.64% is the change from 242 to 163
Calculation steps:
[( 163 - 242 ) ÷ 242] x 100 = -32.64%
Formula
Percentage change = [(163 - 242) / 242] x 100
Subtract the new number by the original number
163 - 242 = -79
-79 ÷ 242 = -0.32644628099173556
-0.32644628099173556 x 100 = -32.64%