-95.74% is the change from 470 to 20
Calculation steps:
[( 20 - 470 ) ÷ 470] x 100 = -95.74%
Formula
Percentage change = [(20 - 470) / 470] x 100
Subtract the new number by the original number
20 - 470 = -450
-450 ÷ 470 = -0.9574468085106383
-0.9574468085106383 x 100 = -95.74%