-58.51% is the change from 940 to 390
Calculation steps:
[( 390 - 940 ) ÷ 940] x 100 = -58.51%
Formula
Percentage change = [(390 - 940) / 940] x 100
Subtract the new number by the original number
390 - 940 = -550
-550 ÷ 940 = -0.5851063829787234
-0.5851063829787234 x 100 = -58.51%