-86.03% is the change from 551 to 77
Calculation steps:
[( 77 - 551 ) ÷ 551] x 100 = -86.03%
Formula
Percentage change = [(77 - 551) / 551] x 100
Subtract the new number by the original number
77 - 551 = -474
-474 ÷ 551 = -0.8602540834845736
-0.8602540834845736 x 100 = -86.03%