-84.51% is the change from 355 to 55
Calculation steps:
[( 55 - 355 ) ÷ 355] x 100 = -84.51%
Formula
Percentage change = [(55 - 355) / 355] x 100
Subtract the new number by the original number
55 - 355 = -300
-300 ÷ 355 = -0.8450704225352113
-0.8450704225352113 x 100 = -84.51%