-86.15% is the change from 455 to 63
Calculation steps:
[( 63 - 455 ) ÷ 455] x 100 = -86.15%
Formula
Percentage change = [(63 - 455) / 455] x 100
Subtract the new number by the original number
63 - 455 = -392
-392 ÷ 455 = -0.8615384615384616
-0.8615384615384616 x 100 = -86.15%