-97.29% is the change from 553 to 15
Calculation steps:
[( 15 - 553 ) ÷ 553] x 100 = -97.29%
Formula
Percentage change = [(15 - 553) / 553] x 100
Subtract the new number by the original number
15 - 553 = -538
-538 ÷ 553 = -0.972875226039783
-0.972875226039783 x 100 = -97.29%