-67.78% is the change from 239 to 77
Calculation steps:
[( 77 - 239 ) ÷ 239] x 100 = -67.78%
Formula
Percentage change = [(77 - 239) / 239] x 100
Subtract the new number by the original number
77 - 239 = -162
-162 ÷ 239 = -0.6778242677824268
-0.6778242677824268 x 100 = -67.78%