-15.06% is the change from 830 to 705
Calculation steps:
[( 705 - 830 ) ÷ 830] x 100 = -15.06%
Formula
Percentage change = [(705 - 830) / 830] x 100
Subtract the new number by the original number
705 - 830 = -125
-125 ÷ 830 = -0.15060240963855423
-0.15060240963855423 x 100 = -15.06%