-97.38% is the change from 573 to 15
Calculation steps:
[( 15 - 573 ) ÷ 573] x 100 = -97.38%
Formula
Percentage change = [(15 - 573) / 573] x 100
Subtract the new number by the original number
15 - 573 = -558
-558 ÷ 573 = -0.9738219895287958
-0.9738219895287958 x 100 = -97.38%