-91.22% is the change from 490 to 43
Calculation steps:
[( 43 - 490 ) ÷ 490] x 100 = -91.22%
Formula
Percentage change = [(43 - 490) / 490] x 100
Subtract the new number by the original number
43 - 490 = -447
-447 ÷ 490 = -0.9122448979591836
-0.9122448979591836 x 100 = -91.22%