-86.1% is the change from 554 to 77
Calculation steps:
[( 77 - 554 ) ÷ 554] x 100 = -86.1%
Formula
Percentage change = [(77 - 554) / 554] x 100
Subtract the new number by the original number
77 - 554 = -477
-477 ÷ 554 = -0.8610108303249098
-0.8610108303249098 x 100 = -86.1%