-76.74% is the change from 331 to 77
Calculation steps:
[( 77 - 331 ) ÷ 331] x 100 = -76.74%
Formula
Percentage change = [(77 - 331) / 331] x 100
Subtract the new number by the original number
77 - 331 = -254
-254 ÷ 331 = -0.7673716012084593
-0.7673716012084593 x 100 = -76.74%