-68.12% is the change from 988 to 315
Calculation steps:
[( 315 - 988 ) ÷ 988] x 100 = -68.12%
Formula
Percentage change = [(315 - 988) / 988] x 100
Subtract the new number by the original number
315 - 988 = -673
-673 ÷ 988 = -0.6811740890688259
-0.6811740890688259 x 100 = -68.12%