-68.74% is the change from 915 to 286
Calculation steps:
[( 286 - 915 ) ÷ 915] x 100 = -68.74%
Formula
Percentage change = [(286 - 915) / 915] x 100
Subtract the new number by the original number
286 - 915 = -629
-629 ÷ 915 = -0.687431693989071
-0.687431693989071 x 100 = -68.74%