-66.56% is the change from 942 to 315
Calculation steps:
[( 315 - 942 ) ÷ 942] x 100 = -66.56%
Formula
Percentage change = [(315 - 942) / 942] x 100
Subtract the new number by the original number
315 - 942 = -627
-627 ÷ 942 = -0.6656050955414012
-0.6656050955414012 x 100 = -66.56%