-85.19% is the change from 824 to 122
Calculation steps:
[( 122 - 824 ) ÷ 824] x 100 = -85.19%
Formula
Percentage change = [(122 - 824) / 824] x 100
Subtract the new number by the original number
122 - 824 = -702
-702 ÷ 824 = -0.8519417475728155
-0.8519417475728155 x 100 = -85.19%