-65.87% is the change from 923 to 315
Calculation steps:
[( 315 - 923 ) ÷ 923] x 100 = -65.87%
Formula
Percentage change = [(315 - 923) / 923] x 100
Subtract the new number by the original number
315 - 923 = -608
-608 ÷ 923 = -0.6587215601300108
-0.6587215601300108 x 100 = -65.87%