-86.55% is the change from 409 to 55
Calculation steps:
[( 55 - 409 ) ÷ 409] x 100 = -86.55%
Formula
Percentage change = [(55 - 409) / 409] x 100
Subtract the new number by the original number
55 - 409 = -354
-354 ÷ 409 = -0.8655256723716381
-0.8655256723716381 x 100 = -86.55%