-62.17% is the change from 830 to 314
Calculation steps:
[( 314 - 830 ) ÷ 830] x 100 = -62.17%
Formula
Percentage change = [(314 - 830) / 830] x 100
Subtract the new number by the original number
314 - 830 = -516
-516 ÷ 830 = -0.6216867469879518
-0.6216867469879518 x 100 = -62.17%