-68.12% is the change from 966 to 308
Calculation steps:
[( 308 - 966 ) ÷ 966] x 100 = -68.12%
Formula
Percentage change = [(308 - 966) / 966] x 100
Subtract the new number by the original number
308 - 966 = -658
-658 ÷ 966 = -0.6811594202898551
-0.6811594202898551 x 100 = -68.12%