-10.24% is the change from 830 to 745
Calculation steps:
[( 745 - 830 ) ÷ 830] x 100 = -10.24%
Formula
Percentage change = [(745 - 830) / 830] x 100
Subtract the new number by the original number
745 - 830 = -85
-85 ÷ 830 = -0.10240963855421686
-0.10240963855421686 x 100 = -10.24%