-51.15% is the change from 393 to 192
Calculation steps:
[( 192 - 393 ) ÷ 393] x 100 = -51.15%
Formula
Percentage change = [(192 - 393) / 393] x 100
Subtract the new number by the original number
192 - 393 = -201
-201 ÷ 393 = -0.5114503816793893
-0.5114503816793893 x 100 = -51.15%