-6.51% is the change from 830 to 776
Calculation steps:
[( 776 - 830 ) ÷ 830] x 100 = -6.51%
Formula
Percentage change = [(776 - 830) / 830] x 100
Subtract the new number by the original number
776 - 830 = -54
-54 ÷ 830 = -0.06506024096385542
-0.06506024096385542 x 100 = -6.51%