-7.59% is the change from 830 to 767
Calculation steps:
[( 767 - 830 ) ÷ 830] x 100 = -7.59%
Formula
Percentage change = [(767 - 830) / 830] x 100
Subtract the new number by the original number
767 - 830 = -63
-63 ÷ 830 = -0.07590361445783132
-0.07590361445783132 x 100 = -7.59%