-94.88% is the change from 293 to 15
Calculation steps:
[( 15 - 293 ) ÷ 293] x 100 = -94.88%
Formula
Percentage change = [(15 - 293) / 293] x 100
Subtract the new number by the original number
15 - 293 = -278
-278 ÷ 293 = -0.9488054607508533
-0.9488054607508533 x 100 = -94.88%