-27.66% is the change from 940 to 680
Calculation steps:
[( 680 - 940 ) ÷ 940] x 100 = -27.66%
Formula
Percentage change = [(680 - 940) / 940] x 100
Subtract the new number by the original number
680 - 940 = -260
-260 ÷ 940 = -0.2765957446808511
-0.2765957446808511 x 100 = -27.66%