-67.36% is the change from 242 to 79
Calculation steps:
[( 79 - 242 ) ÷ 242] x 100 = -67.36%
Formula
Percentage change = [(79 - 242) / 242] x 100
Subtract the new number by the original number
79 - 242 = -163
-163 ÷ 242 = -0.6735537190082644
-0.6735537190082644 x 100 = -67.36%