-66.88% is the change from 930 to 308
Calculation steps:
[( 308 - 930 ) ÷ 930] x 100 = -66.88%
Formula
Percentage change = [(308 - 930) / 930] x 100
Subtract the new number by the original number
308 - 930 = -622
-622 ÷ 930 = -0.6688172043010753
-0.6688172043010753 x 100 = -66.88%