-75.71% is the change from 317 to 77
Calculation steps:
[( 77 - 317 ) ÷ 317] x 100 = -75.71%
Formula
Percentage change = [(77 - 317) / 317] x 100
Subtract the new number by the original number
77 - 317 = -240
-240 ÷ 317 = -0.7570977917981072
-0.7570977917981072 x 100 = -75.71%