-27.51% is the change from 938 to 680
Calculation steps:
[( 680 - 938 ) ÷ 938] x 100 = -27.51%
Formula
Percentage change = [(680 - 938) / 938] x 100
Subtract the new number by the original number
680 - 938 = -258
-258 ÷ 938 = -0.27505330490405117
-0.27505330490405117 x 100 = -27.51%