-90.41% is the change from 490 to 47
Calculation steps:
[( 47 - 490 ) ÷ 490] x 100 = -90.41%
Formula
Percentage change = [(47 - 490) / 490] x 100
Subtract the new number by the original number
47 - 490 = -443
-443 ÷ 490 = -0.9040816326530612
-0.9040816326530612 x 100 = -90.41%