-84.19% is the change from 487 to 77
Calculation steps:
[( 77 - 487 ) ÷ 487] x 100 = -84.19%
Formula
Percentage change = [(77 - 487) / 487] x 100
Subtract the new number by the original number
77 - 487 = -410
-410 ÷ 487 = -0.8418891170431212
-0.8418891170431212 x 100 = -84.19%