-86.6% is the change from 403 to 54
Calculation steps:
[( 54 - 403 ) ÷ 403] x 100 = -86.6%
Formula
Percentage change = [(54 - 403) / 403] x 100
Subtract the new number by the original number
54 - 403 = -349
-349 ÷ 403 = -0.8660049627791563
-0.8660049627791563 x 100 = -86.6%