-17.36% is the change from 939 to 776
Calculation steps:
[( 776 - 939 ) ÷ 939] x 100 = -17.36%
Formula
Percentage change = [(776 - 939) / 939] x 100
Subtract the new number by the original number
776 - 939 = -163
-163 ÷ 939 = -0.17358892438764642
-0.17358892438764642 x 100 = -17.36%