-96.86% is the change from 478 to 15
Calculation steps:
[( 15 - 478 ) ÷ 478] x 100 = -96.86%
Formula
Percentage change = [(15 - 478) / 478] x 100
Subtract the new number by the original number
15 - 478 = -463
-463 ÷ 478 = -0.9686192468619247
-0.9686192468619247 x 100 = -96.86%