-67.77% is the change from 242 to 78
Calculation steps:
[( 78 - 242 ) ÷ 242] x 100 = -67.77%
Formula
Percentage change = [(78 - 242) / 242] x 100
Subtract the new number by the original number
78 - 242 = -164
-164 ÷ 242 = -0.6776859504132231
-0.6776859504132231 x 100 = -67.77%