-89.36% is the change from 470 to 50
Calculation steps:
[( 50 - 470 ) ÷ 470] x 100 = -89.36%
Formula
Percentage change = [(50 - 470) / 470] x 100
Subtract the new number by the original number
50 - 470 = -420
-420 ÷ 470 = -0.8936170212765957
-0.8936170212765957 x 100 = -89.36%