-96.98% is the change from 496 to 15
Calculation steps:
[( 15 - 496 ) ÷ 496] x 100 = -96.98%
Formula
Percentage change = [(15 - 496) / 496] x 100
Subtract the new number by the original number
15 - 496 = -481
-481 ÷ 496 = -0.969758064516129
-0.969758064516129 x 100 = -96.98%