-87.12% is the change from 427 to 55
Calculation steps:
[( 55 - 427 ) ÷ 427] x 100 = -87.12%
Formula
Percentage change = [(55 - 427) / 427] x 100
Subtract the new number by the original number
55 - 427 = -372
-372 ÷ 427 = -0.8711943793911007
-0.8711943793911007 x 100 = -87.12%