-80% is the change from 385 to 77
Calculation steps:
[( 77 - 385 ) ÷ 385] x 100 = -80%
Formula
Percentage change = [(77 - 385) / 385] x 100
Subtract the new number by the original number
77 - 385 = -308
-308 ÷ 385 = -0.8
-0.8 x 100 = -80%
Example