-88.89% is the change from 495 to 55
Calculation steps:
[( 55 - 495 ) ÷ 495] x 100 = -88.89%
Formula
Percentage change = [(55 - 495) / 495] x 100
Subtract the new number by the original number
55 - 495 = -440
-440 ÷ 495 = -0.8888888888888888
-0.8888888888888888 x 100 = -88.89%