-97.48% is the change from 595 to 15
Calculation steps:
[( 15 - 595 ) ÷ 595] x 100 = -97.48%
Formula
Percentage change = [(15 - 595) / 595] x 100
Subtract the new number by the original number
15 - 595 = -580
-580 ÷ 595 = -0.9747899159663865
-0.9747899159663865 x 100 = -97.48%