-86.8% is the change from 553 to 73
Calculation steps:
[( 73 - 553 ) ÷ 553] x 100 = -86.8%
Formula
Percentage change = [(73 - 553) / 553] x 100
Subtract the new number by the original number
73 - 553 = -480
-480 ÷ 553 = -0.8679927667269439
-0.8679927667269439 x 100 = -86.8%