-86.75% is the change from 551 to 73
Calculation steps:
[( 73 - 551 ) ÷ 551] x 100 = -86.75%
Formula
Percentage change = [(73 - 551) / 551] x 100
Subtract the new number by the original number
73 - 551 = -478
-478 ÷ 551 = -0.867513611615245
-0.867513611615245 x 100 = -86.75%