-86.26% is the change from 393 to 54
Calculation steps:
[( 54 - 393 ) ÷ 393] x 100 = -86.26%
Formula
Percentage change = [(54 - 393) / 393] x 100
Subtract the new number by the original number
54 - 393 = -339
-339 ÷ 393 = -0.8625954198473282
-0.8625954198473282 x 100 = -86.26%