-30.49% is the change from 961 to 668
Calculation steps:
[( 668 - 961 ) ÷ 961] x 100 = -30.49%
Formula
Percentage change = [(668 - 961) / 961] x 100
Subtract the new number by the original number
668 - 961 = -293
-293 ÷ 961 = -0.3048907388137357
-0.3048907388137357 x 100 = -30.49%