-98.98% is the change from 490 to 5
Calculation steps:
[( 5 - 490 ) ÷ 490] x 100 = -98.98%
Formula
Percentage change = [(5 - 490) / 490] x 100
Subtract the new number by the original number
5 - 490 = -485
-485 ÷ 490 = -0.9897959183673469
-0.9897959183673469 x 100 = -98.98%