-97.23% is the change from 541 to 15
Calculation steps:
[( 15 - 541 ) ÷ 541] x 100 = -97.23%
Formula
Percentage change = [(15 - 541) / 541] x 100
Subtract the new number by the original number
15 - 541 = -526
-526 ÷ 541 = -0.9722735674676525
-0.9722735674676525 x 100 = -97.23%