-89.57% is the change from 470 to 49
Calculation steps:
[( 49 - 470 ) ÷ 470] x 100 = -89.57%
Formula
Percentage change = [(49 - 470) / 470] x 100
Subtract the new number by the original number
49 - 470 = -421
-421 ÷ 470 = -0.8957446808510638
-0.8957446808510638 x 100 = -89.57%