-66.88% is the change from 942 to 312
Calculation steps:
[( 312 - 942 ) ÷ 942] x 100 = -66.88%
Formula
Percentage change = [(312 - 942) / 942] x 100
Subtract the new number by the original number
312 - 942 = -630
-630 ÷ 942 = -0.6687898089171974
-0.6687898089171974 x 100 = -66.88%