-65.91% is the change from 924 to 315
Calculation steps:
[( 315 - 924 ) ÷ 924] x 100 = -65.91%
Formula
Percentage change = [(315 - 924) / 924] x 100
Subtract the new number by the original number
315 - 924 = -609
-609 ÷ 924 = -0.6590909090909091
-0.6590909090909091 x 100 = -65.91%