-51.33% is the change from 824 to 401
Calculation steps:
[( 401 - 824 ) ÷ 824] x 100 = -51.33%
Formula
Percentage change = [(401 - 824) / 824] x 100
Subtract the new number by the original number
401 - 824 = -423
-423 ÷ 824 = -0.5133495145631068
-0.5133495145631068 x 100 = -51.33%