-97.31% is the change from 558 to 15
Calculation steps:
[( 15 - 558 ) ÷ 558] x 100 = -97.31%
Formula
Percentage change = [(15 - 558) / 558] x 100
Subtract the new number by the original number
15 - 558 = -543
-543 ÷ 558 = -0.9731182795698925
-0.9731182795698925 x 100 = -97.31%