-67.89% is the change from 981 to 315
Calculation steps:
[( 315 - 981 ) ÷ 981] x 100 = -67.89%
Formula
Percentage change = [(315 - 981) / 981] x 100
Subtract the new number by the original number
315 - 981 = -666
-666 ÷ 981 = -0.6788990825688074
-0.6788990825688074 x 100 = -67.89%