-61.17% is the change from 824 to 320
Calculation steps:
[( 320 - 824 ) ÷ 824] x 100 = -61.17%
Formula
Percentage change = [(320 - 824) / 824] x 100
Subtract the new number by the original number
320 - 824 = -504
-504 ÷ 824 = -0.6116504854368932
-0.6116504854368932 x 100 = -61.17%