-95.61% is the change from 342 to 15
Calculation steps:
[( 15 - 342 ) ÷ 342] x 100 = -95.61%
Formula
Percentage change = [(15 - 342) / 342] x 100
Subtract the new number by the original number
15 - 342 = -327
-327 ÷ 342 = -0.956140350877193
-0.956140350877193 x 100 = -95.61%