-88.3% is the change from 470 to 55
Calculation steps:
[( 55 - 470 ) ÷ 470] x 100 = -88.3%
Formula
Percentage change = [(55 - 470) / 470] x 100
Subtract the new number by the original number
55 - 470 = -415
-415 ÷ 470 = -0.8829787234042553
-0.8829787234042553 x 100 = -88.3%