-73.17% is the change from 287 to 77
Calculation steps:
[( 77 - 287 ) ÷ 287] x 100 = -73.17%
Formula
Percentage change = [(77 - 287) / 287] x 100
Subtract the new number by the original number
77 - 287 = -210
-210 ÷ 287 = -0.7317073170731707
-0.7317073170731707 x 100 = -73.17%