-56.1% is the change from 820 to 360
Calculation steps:
[( 360 - 820 ) ÷ 820] x 100 = -56.1%
Formula
Percentage change = [(360 - 820) / 820] x 100
Subtract the new number by the original number
360 - 820 = -460
-460 ÷ 820 = -0.5609756097560976
-0.5609756097560976 x 100 = -56.1%