-86.13% is the change from 555 to 77
Calculation steps:
[( 77 - 555 ) ÷ 555] x 100 = -86.13%
Formula
Percentage change = [(77 - 555) / 555] x 100
Subtract the new number by the original number
77 - 555 = -478
-478 ÷ 555 = -0.8612612612612612
-0.8612612612612612 x 100 = -86.13%