-99.59% is the change from 490 to 2
Calculation steps:
[( 2 - 490 ) ÷ 490] x 100 = -99.59%
Formula
Percentage change = [(2 - 490) / 490] x 100
Subtract the new number by the original number
2 - 490 = -488
-488 ÷ 490 = -0.9959183673469387
-0.9959183673469387 x 100 = -99.59%