-98.47% is the change from 590 to 9
Calculation steps:
[( 9 - 590 ) ÷ 590] x 100 = -98.47%
Formula
Percentage change = [(9 - 590) / 590] x 100
Subtract the new number by the original number
9 - 590 = -581
-581 ÷ 590 = -0.9847457627118644
-0.9847457627118644 x 100 = -98.47%