-7.51% is the change from 839 to 776
Calculation steps:
[( 776 - 839 ) ÷ 839] x 100 = -7.51%
Formula
Percentage change = [(776 - 839) / 839] x 100
Subtract the new number by the original number
776 - 839 = -63
-63 ÷ 839 = -0.07508939213349225
-0.07508939213349225 x 100 = -7.51%