-96.77% is the change from 558 to 18
Calculation steps:
[( 18 - 558 ) ÷ 558] x 100 = -96.77%
Formula
Percentage change = [(18 - 558) / 558] x 100
Subtract the new number by the original number
18 - 558 = -540
-540 ÷ 558 = -0.967741935483871
-0.967741935483871 x 100 = -96.77%