-43.9% is the change from 820 to 460
Calculation steps:
[( 460 - 820 ) ÷ 820] x 100 = -43.9%
Formula
Percentage change = [(460 - 820) / 820] x 100
Subtract the new number by the original number
460 - 820 = -360
-360 ÷ 820 = -0.43902439024390244
-0.43902439024390244 x 100 = -43.9%