-6.75% is the change from 830 to 774
Calculation steps:
[( 774 - 830 ) ÷ 830] x 100 = -6.75%
Formula
Percentage change = [(774 - 830) / 830] x 100
Subtract the new number by the original number
774 - 830 = -56
-56 ÷ 830 = -0.06746987951807229
-0.06746987951807229 x 100 = -6.75%