-49.75% is the change from 796 to 400
Calculation steps:
[( 400 - 796 ) ÷ 796] x 100 = -49.75%
Formula
Percentage change = [(400 - 796) / 796] x 100
Subtract the new number by the original number
400 - 796 = -396
-396 ÷ 796 = -0.49748743718592964
-0.49748743718592964 x 100 = -49.75%