-66.77% is the change from 939 to 312
Calculation steps:
[( 312 - 939 ) ÷ 939] x 100 = -66.77%
Formula
Percentage change = [(312 - 939) / 939] x 100
Subtract the new number by the original number
312 - 939 = -627
-627 ÷ 939 = -0.6677316293929713
-0.6677316293929713 x 100 = -66.77%