-43.37% is the change from 830 to 470
Calculation steps:
[( 470 - 830 ) ÷ 830] x 100 = -43.37%
Formula
Percentage change = [(470 - 830) / 830] x 100
Subtract the new number by the original number
470 - 830 = -360
-360 ÷ 830 = -0.43373493975903615
-0.43373493975903615 x 100 = -43.37%