-66.7% is the change from 946 to 315
Calculation steps:
[( 315 - 946 ) ÷ 946] x 100 = -66.7%
Formula
Percentage change = [(315 - 946) / 946] x 100
Subtract the new number by the original number
315 - 946 = -631
-631 ÷ 946 = -0.6670190274841438
-0.6670190274841438 x 100 = -66.7%